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Encyclopedia results for Delamination

Delamination





Encyclopedia results for Delamination

  1. Delamination

    about delamination in geology Delamination geology delamination in embryology Embryogenesis refimprove date March 2009 File Delamination CFRP.jpg thumb Delamination of Cfrp CFRP under compression load Delamination is a mode of failure for composite material s. ref name cantwell cite journal author WJ Cantwell, J Morton title The impact resistance of composite materials a review journal Composites year 1991 volume 22 issue 5 pages 347&ndash 62 url doi 10.1016 0010 4361 91 90549 V ref Modes of failure are also known as failure mechanisms . In laminated materials, repeated cyclic stresses, impact, and so on can cause layers to separate, forming a mica like structure of separate layers, with significant loss of mechanical toughness. Delamination also occurs in reinforced concrete structures subject to reinforcement corrosion, in which case the oxidized metal of the reinforcement is greater in volume than the original metal. The oxidized metal therefore requires greater space than the original reinforcing bars, which causes a wedge like stress on the concrete. This force eventually overcomes the relatively weak tensile strength of concrete, resulting in a separation or delamination of the concrete above and below the reinforcing bars. The cause of fiber pull out another form of failure mechanism and delamination is weak bonding. ref Serope Kalpakjian, Steven R Schmid. Manufacturing Engineering and Technology . International edition. 4th Ed. Prentice Hall, Inc. 2001. ISBN 0 13 017440 8 ref Thus, delamination is an insidious kind of failure as it develops inside of the material, without being obvious on the surface, much like metal fatigue . Delamination failure may be detected in the material ... de icing salts and chemicals are commonly subject to delamination and as such are typically scheduled ... defects inside the material. Due to increasing use of composite materials in aviation , delamination ... Reflist Category Composite materials de Delamination it Delaminazione pl Delaminacja kompozyty ...   more details



  1. Delamination (geology)

    File Sierra Nevada Mountains.JPG thumb 250px Sierra Nevada Mountains formed by delamination as seen from the International Space Station . In geophysics , delamination refers to the loss and sinking of the portion of the lowermost lithosphere from the tectonic plate to which it was attached. This can occur when the lower portion of the lithosphere becomes more dense than the surrounding Mantle geology mantle . Because of the instability of higher density material atop lower density material, the lower lithosphere separates from the tectonic plate and sinks into the mantle. ref cite journal last Kay first RW coauthors Mahlburg Kay, S. year 1993 title Delamination and delamination magmatism journal Tectonophysics volume 219 issue 1 3 pages 177 189 doi 10.1016 0040 1951 93 90295 U ref Delamination is of two basic types brittle or ductile. In the brittle type, the lower crust metamorphoses to the denser eclogite , causing a density inversion, ref name Rollinson cite book title Early Earth systems a geochemical approach author Hugh Richard Rollinson url http books.google.com ?id 9YRHu9kdPz8C&pg PA169 page 169 year 2007 isbn 1405122552 publisher Wiley Blackwell ref which then may detach rip away and sink. The second type, ductile delamination, is related to convective instabilities. The convection can simply peel away the lower crust. Or, in a different scenario, a Rayleigh Taylor instability is created. Due to the instability in a local area, the base of the lithosphere breaks up into descending ... Society of America ref Delamination of the lithosphere has two major geologic effects. First ... . Delamination may thus account for some volcanic regions that have been attributed to mantle ... of lithosphere delamination is the Sierra Nevada U.S. Sierra Nevada mountains in the western USA ... Timing of volcanism in the Sierra Nevada of California Evidence for Pliocene delamination of the batholithic ... first3 G. Lang ref ref name delamination lee cite journal doi 10.1126 science.289.5486.1912 title ...   more details



  1. Plating (geology)

    Sources date April 2010 In geology , plating is a hypothesized process whereby asthenosphere asthenospheric Mantle geology mantle hardens beneath Crust geology crustal material, thereby becoming attached to it and thereafter moving together with the crustal material as part of the lithosphere . A complementary process, although it does not necessarily always involve the upper mantle, is called delamination geology delamination . See also Delamination geology Ophiolite Category Plate tectonics tectonics stub ...   more details



  1. 3D composites

    orphan date March 2010 Unreferenced date March 2010 3D composites are a way to increase through the thickness mechanical properties of laminate s by having reinforcement in the thickness direction out of plane . When compared to a 2D composite, the impact resistance , compression after impact CAI , and delamination control is significantly improved without significantly reducing the mechanical properties along the plane. Possible applications include wind turbine blades, Ballistic vest ballistic armor , boat construction, and the automotive industry . The most common manufacturing technique is resin transfer molding . Category Composite materials civil engineering stub ...   more details



  1. Fiber pull-out

    Fiber pull out is one of the failure mechanisms in fiber reinforced composite materials ref name cantwell cite journal author WJ Cantwell, J Morton title The impact resistance of composite materials a review journal Composites year 1991 volume 22 issue 5 pages 347&ndash 62 url doi 10.1016 0010 4361 91 90549 V ref . Other forms of failure include delamination , intralaminar matrix cracking, longitudinal matrix splitting, fiber matrix debonding, and fiber fracture ref name cantwell . The cause of fiber pull out and delamination is weak bonding ref Serope Kalpakjian, Steven R Schmid. Manufacturing Engineering and Technology . International edition. 4th Ed. Prentice Hall, Inc. 2001. ISBN 0 13 017440 8 ref . Work for debonding, math W d frac pi d 2 sigma f 2 l d 24 E f math ref PWR Beaumont. Fracture mechanisms in fibrous composites . Fracture Mechanics, Current Status, Future Prospects. Edited by RA Smith. Pergamon Press 1979. p211 33 in cite journal author WJ Cantwell, J Morton title The impact resistance of composite materials a review journal Composites year 1991 volume 22 issue 5 pages 347&ndash 62 url doi 10.1016 0010 4361 91 90549 V ref where math d math is fiber diameter math sigma f 2 math is failure strength of the fiber math l d math is the length of the debonded zone math E f math is fiber modulus References Reflist Category Composite materials ...   more details



  1. Z-pinning

    Z pinning is a technique to insert reinforcing fibres also called Z pins or Z fibres along the Cartesian coordinate system Z direction of continuous fibre reinforced plastic s. ref name zpinningpaper cite web author Partridge, Ivana K. et al. title Manufacture and performance of Z pinned composites work Advanced polymeric materials structure property relationships, CRC Press ISBN 1 58716 047 1 chapter 3 year 2003 ref Z pins can be made of metal or precured unidirectional composite fibres. It is designed for use within pre preg technology there is extensive experimental evidence that Z pinning dramatically improves the resistance of the composite structure to delamination . ref name zpinningdelamination cite web author Partridge, Ivana K. et al. title Delamination resistant laminates by Z Fiber pinning doi 10.1016 j.compositesa.2004.06.029 work Composites Part A year 2005 month January ref Several ways of inserting Z pins have been developed to date. One method involves the use of an ultrasonic hammer that forces the Z pins through the uncured preform while inducing high frequency vibrations to them. The vibrating chamfered tip of the Z pins locally heats up and softens the resin allowing the Z fibre to penetrate the preform with minimal disruption of the long fibres. See also Tufting composites References references External links http www.cranfield.ac.uk sas clientservices facilities page5257.jsp Cranfield University page with Z pinning unit description DEFAULTSORT Z Pinning Category Composite materials material stub ...   more details



  1. Red rot (leather)

    Red rot also redrot is a degradation process found in vegetable tanned leather . ref Applebaum, Barabara. Guide to Environmental Protection of Collections p. 185. Sound View Press, 1991 ref Red rot is caused by prolonged storage or exposure to high relative humidity , environmental pollution, and high temperature. In particular, red rot occurs at pH values of 4.2 to 4.5. Sulfur dioxide converts to sulfuric acid which forms hydrogen peroxide . The peroxide combines with residual tannin s in the leather to oxidize proteins, creating ammonium sulfate and ammonium bisulfate ref Stambolov, Todor. Environmental influences on the weathering of leather . From International leather and parchment symposium, vol 8. May 1989. Deutsches Ledermuseum Deutsches Schuhmuseum 1989 , pp. 1 5, English German ref The disease manifests as a characteristic powdering of the leather s surface, along with structural weakness through loss, delamination, and a felt like consistency. The damage caused by red rot is irreversible. However, its spread may be retarded by an application of a consolidant such as Klucel mG coated with a sealer such as Renaissance Wax . References reflist Category Leather Category Bookbinding book art stub ...   more details



  1. Moisture Sensitivity Level

    Moisture Sensitivity Level relates to the packaging and handling precautions for some semiconductors. The MSL is an Electronics electronic standard for the time period in which a moisture sensitive device can be exposed to ambient room conditions approximately 30 C 60 RH . Increasingly, semiconductors have been manufactured in smaller sizes. Components such as thin fine pitch devices and ball grid array s could be damaged during Surface mount technology SMT reflow when moisture trapped inside the component expands. The expansion of trapped moisture can result in internal separation delamination of the plastic from the die or lead frame, wire bond damage, die damage, and internal cracks. Most of this damage is not visible on the component surface. In extreme cases, cracks will extend to the component surface. In the most severe cases, the component will bulge and pop. This is known as the popcorn effect. IPC electronics IPC Association Connecting Electronic Industries created and released IPC M 109, Moisture sensitive Component Standards and Guideline Manual. Moisture sensitive devices are packaged in a moisture barrier antistatic bag with a desiccant and a moisture indicator card which is vacuum sealed. IPC M 109 includes seven documents. According to http www.siliconfareast.com msl.htm IPC JEDEC s J STD 20 Moisture Reflow Sensitivity Classification for Plastic Integrated Circuit IC SMDs, there are eight levels of moisture sensitivity. Components must be mounted and reflowed within the allowable period of time floor life out of the bag . MSL 6 Mandatory Bake before use MSL 5A 24 hours MSL 5 48 hours MSL 4 72 hours MSL 3 168 hours MSL 2A 4 weeks MSL 2 1 year MSL 1 Unlimited Category Integrated circuits Category Semiconductors de Moisture Sensitive Level ...   more details



  1. Door security

    delamination and or splitting of the door frame metal wraps can be placed under the deadbolt and wrap the door edge to prevent delamination and heavy duty products that place plates on either side the door and or frame which are tied together with screws or bolts prevent delamination. Door chain s allows ...   more details



  1. Scratch tester

    The scratch tester One of the basic requirements of a coating if it is going to improve the surface properties of a tool or component is adhesion. The scratch tester is a common method of testing the adhesion of coatings to substrates. The scratch tester equipment uses a small diamond stylus to test the adhesion of coatings. The diamond with a radius of 200 m is scratched across the coated surface of a substrate at a constant velocity whilst a load is applied with a constant loading rate. The load on the diamond causes stresses to be increased at the interface between the coating and the substrate that can result in delamination or chipping of the coating to occur. The load at which the coating first delaminates is called the critical load. Image Scratch adhesion test image.gif Coating failure can be detected using a number of different methods such as a load cell that measures the change in friction, acoustic emission or simply looking at the scratch channel under a microscope. See also Tribometer Wear and friction tester Calo tester Coating thickness tester Abrasion mechanical References reflist http www.csm instruments.com en Scratch Nano, Micro and Macro Scratch Testers http www.csm instruments.com en Nanoindentation Nanoscratch of Oxide Coatings and Measurement of Acoustic Emission during Micro Indentation Nanoscratch of Oxide Coatings on Thin Film Polymer Substrates http www.pvd coatings.co.uk pvd coating technology testing equipment scratch tester Scratch tester Original source of article Category Industrial processes Category Measuring instruments fr Scratch test ...   more details



  1. Mountain formation

    Delamination geology delamination by intrusion of hot asthenosphere Bottom Subduction of ocean crust ... thumb 250px Sierra Nevada Mountains formed by delamination as seen from the International Space Station ... Nevada U.S. Sierra Nevada Range , where Delamination geology delamination created a block 650  ... PA9 page 9 author John Gerrard isbn 0262071282 date 1990 04 12 ref ref name delamination lee cite ...   more details



  1. Steve Charles

    for the English footballer Steve Charles footballer Steve Charles, MD is known nationally as well as internationally for his development of several of the techniques and devices used in vitreoretinal surgery. He is a board certified ophthalmologist and vitreoretinal surgeon, a mechanical electrical engineer who has 50 patents or patents applied for, a clinical professor at the University of Tennessee, and an adjunct professor at Columbia College of Physicians and Surgeons. Education 1969 M.D. University of Miami School of Medicine 1965 69 University of Miami School of Medicine 1963 65 University of Oklahoma Engineering Pre Med 1962 63 North Carolina State College Engineering 1961 62 University of Miami Engineering Vitreoretinal Surgery Dr. Charles has performed over 26,000 Vitrectomy vitrectomies across 27 countries and operated in more than 50 ORs. He has delivered 14 named lectures and 950 lectures in 43 countries to more than 1600 listeners. He has traveled on more than 1200 speaking trips and authored a textbook, which is now in the 4th edition. He has also written 140 articles in the medical literature, and written 45 book chapters. He is the founder of the Charles Retina Institute, located in Memphis, TN, which is a nationally known eye clinic specializing in the treatment of retina , macula , and vitreous diseases. Developed Techniques and Technologies Techniques Internal Drainage of Subretinal Fluid Fluid Air Exchange, Air Gas Exchange, Air Silicone Exchange Scissors Segmentation & Delamination Forceps Membrane Peeling Endophotocoagulation Linear Suction Anterior PVR Dissection anterior loop Retinectomy Subretinal Surgery using Punch Thru Retinotomy Inside Out Delamination & Peeling Interface Vitrectomy Pars plana vitrectomy Medium Term PFO Perfluoro Octane Technologies Ocutome sup TM sup 8000 MicroVit sup TM sup Real Time, Gray Scale B Scan Endophotocoagulator Alcon ACCURUS sup sup Surgical System Alcon CONSTELLATION sup sup Vision System Engineering Dr. Ch ...   more details



  1. Index of civil engineering articles

    Orphan date February 2009 This is an alphabetical list of articles pertaining specifically to civil engineering . For a broad overview of engineering, please see List of engineering topics . For biographies please see List of civil engineers . compactTOC8 side yes nobreak yes A Accuracy and precision American Society of Civil Engineers Applied mechanics B Bending Brittle Buckling C CAD Calculator Calculus Carbon fiber Classical mechanics Composite material Compression ratio Compressive strength Computational fluid dynamics Computer Computer aided design Conservation of mass Corrosion D Damping deformation engineering Deformation Delamination Design Dimensionless number Technical drawing Drafting Dynamics mechanics Dynamics E Elasticity physics Elasticity Engineering Engineering drawing Engineering economics Engineering ethics Engineering management Engineering society Exploratory engineering F Factor of safety Fatigue material Fatigue Fillet mechanics Fillet Finite element analysis Finite element method Fluid mechanics Force Friction Fundamentals of Engineering exam G Rail gauge Gauge Gauge engineering Granular material H HVAC Heating and cooling systems Hydraulics Hydrostatics I Inclined plane Inertia Instrumentation Invention J Empty section date July 2010 K Empty section date July 2010 L Leakage Treatments to External walls Lever Liability Life cycle cost analysis Limit state design Load transfer M Margin of safety Mass transfer Materials Materials engineering Material selection Mechanics Moment physics Moment Moment of inertia N Normal stress Nozzle masonry O Empty section date July 2010 P Physics Plasticity physics Plasticity Poisson s ratio Position vector Pressure Product Lifecycle Management Professional Engineer Project management Pulley Pump Pile Foundation Q Quality business Quality Quality control Quantity Surveying R Reliability engineering Resistive force Reverse engineering Rigid body S Safety engineering Shear force diagram s Shear strength Shear str ...   more details



  1. Trunk neural crest

    The trunk neural crest is a form of neural crest . ref name urlThe Neural Crest Cite web url http www.ncbi.nlm.nih.gov books bv.fcgi?rid dbio.section.3109 title The Neural Crest format work accessdate 2009 05 31 ref The trunk neural crest lies between the vagal and sacral neural crest and gives rise to two groups of cells. One group migrates dorsolateral and populates the skin, forming pigment cells and the other migrates ventrolateral through the anterior sclerotome to become the epinephrine producing cells of the adrenal gland and the neurons of the sympathetic nervous system . Some cells remain in the sclerotome to form the dorsal root ganglia Other Migration Locations Proximal to the spinal cord and line up symmetrically to form the dorsal root ganglia . Into the skin to form melanocytes . ref name pmid16029418 Cite journal title Novel expression patterns of Pax3 Pax7 in early trunk neural crest and its melanocyte and non melanocyte lineages in amniote embryos journal Pigment Cell Res. volume 18 issue 4 pages 243 51 year 2005 month August pmid 16029418 doi 10.1111 j.1600 0749.2005.00238.x url http www3.interscience.wiley.com resolve openurl?genre article&sid nlm pubmed&issn 0893 5785&date 2005&volume 18&issue 4&spage 243 author1 Lacosta AM author2 Muniesa P author3 Ruberte J author4 Sarasa M author5 Dom nguez L author separator , ref Chromaffin cell s of the adrenal medulla . ref name pmid2039141 Cite journal author Lallier TE title Cell lineage and cell migration in the neural crest journal Ann. N. Y. Acad. Sci. volume 615 issue pages 158 71 year 1991 pmid 2039141 doi 10.1111 j.1749 6632.1991.tb37758.x url http www3.interscience.wiley.com resolve openurl?genre article&sid nlm pubmed&issn 0077 8923&date 1991&volume 615&spage 158 ref Near the vertebral column and become sympathetic chain ganglia . Differentiation involves BMP noggin. ref name pmid15456730 Cite journal title Canonical Wnt activity regulates trunk neural crest delamination linking BMP noggin signal ...   more details



  1. Tufting (composites)

    Mergeto tufting date December 2009 In the field of composite material s, tufting is an experimental technology to locally reinforce continuous fibre reinforced plastic s along the Cartesian coordinate system z direction , with the objective of enhancing the Shear stress shear and delamination resistance of the structure. ref name tuftingpaper cite web author Dell Anno, Giuseppe et al. title Exploring mechanical property balance in tufted carbon fabric epoxy composites url http www.sciencedirect.com science? ob ArticleURL& udi B6TWN 4P47GRX 1& user 10& rdoc 1& fmt & orig search& sort d&view c& acct C000050221& version 1& urlVersion 0& userid 10&md5 aee4f18c39a92e09d8b170f42c6d3c83 doi 10.1016 j.compositesa.2007.06.004 work Composites Part A year 2007 month November accessdate 2008 01 22 ref It consists of inserting a Yarn thread through a layered dry fabric, using a needle that, after insertion, moves back along the same trajectory leaving a loop of the thread on the bottom of the structure. It is a technology developed for and used within the thermoset resin injection manufacturing route, however it is currently being debated whether also Prepreg pre pregs can be successfully tufted. Citation needed date December 2009 Tufting is considered a more economical and flexible method compared to 3D weaving or 3D braid ing to include z fibres in laminated composites. ref name tuftingpinning cite web author Carti , Denis D. R. et al. title 3D reinforcement of stiffener to skin T joints by Z pinning and tufting url http www.sciencedirect.com science? ob ArticleURL& udi B6V2R 4KMYM9B 1& user 10& rdoc 1& fmt & orig search& sort d&view c& acct C000050221& version 1& urlVersion 0& userid 10&md5 88b761e17d8906e6f57465b7d2f162c9 doi 10.1016 j.engfracmech.2006.06.012 work Engineering Fracture Mechanics year 2006 month November accessdate 2008 01 22 ref It resembles stitching , but it is different in that tufting only requires access from one side of the preform. Depending on the equ ...   more details



  1. Orogeny

    Mountains a result of delamination as seen from the International Space Station . Mountain formation ... on tectonic plate boundaries. Regions can also experience uplift as a result of Delamination geology delamination of the lithosphere , in which an unstable portion of cold lithosphere lithospheric ... uplift. ref name delamination lee cite journal doi 10.1126 science.289.5486.1912 pmid 10988067 ... MIT Press ref experienced renewed uplift after a delamination of the lithosphere beneath them. ref name delamination lee ref cite journal doi 10.1130 0091 7613 2000 28 811 TOVITS 2.0.CO 2 year ... delamination of the batholithic root? first3 G. Lang last3 Farmer first2 Allen F. last2 Glazner ...   more details



  1. SympaTex

    Unreferenced date June 2008 SympaTex is a type of fabric that is branded as waterproof with breatheable fabrics made or licenced by SympaTex Technologies GmbH. The fabric features a waterproof, windproof and breatheable artificial membrane membrane that is laminate d to fabrics either on its inner surface or sandwiched between two fabric layers often marketed as 3 layer laminate . The latter system offers greater durability, by better protecting the integrity of the SympaTex layer from abrasion to both the outside and the inside of the garment. Overview Image Laminierprozess.jpg thumb 250px Lamination The SympaTex membrane is made of hydrophilic polyether ester block copolymer , which is closed i.e. it has no pores . Like its more common polyurethane equivalent, it can also be referred to as a monolithic membrane. No water can get in from the outside, but water vapour molecules are transported through the membrane from the inside to the outside by way of an absorption and evaporation process. This moisture transfer through the membrane is what is referred to as breatheability. A closed membrane like SympaTex differs from microporous membranes such as eVent or now discontinued Triplepoint Ceramic which have microscopic pores that let air and water vapour pass through, yet have such low surface energy that the surface tension of any liquid water in contact remains too high to allow it to squeeze through the pores. Microporous membranes have traditionally been let down by the contamination of their pores which significantly degrades their breatheability and commonly also have poorer adhesion to fabrics making them more susceptible to delamination. SympaTex s co polymer consists of polyester for molecular strength, and polyether to transport water molecules. The membrane weighs about 30g per average jacket. The membrane is at least 5 micrometres thick, translucent, and stretchable with good stretch recovery. The SympaTex membrane is completely recyclable and relatively ...   more details



  1. Mamidala Ramulu

    Image MRamulu.jpg 120px right thumb Professor Mamidala Ramulu, University of Washington Biography Dr. Ramulu was born in southern India . Education He completed his doctoral degree at University of Washington in 1982 under Dr. Kobayashi s guidance. Teaching He teaches 4 5 undergraduate graduate courses every calendar year at the Mechanical Engineering Department at the University of Washington . These courses include mechanics of materials , fracture mechanics , fatigue material fatigue , and advanced manufacturing processes. Research His main research activities focus on solid mechanics , fatigue material fatigue , fracture mechanics , and their applications in manufacturing engineering , and design and manufacturing of composite materials Publications 1. Electrical discharge machining of functionally graded 15 35 Vol SiC p Al composites Seo, Y.W. School of Engineering and Computer Science, Washington State University Vancouver Kim, D. Ramulu, M. Source Materials and Manufacturing Processes, v 21, n 5, Jun 1, 2006, p 479 487. 2. Facing SiCp Mg metal matrix composites with carbide tools Pedersen, W. Department of Mechanical and Industrial Engineering, 105 VKH, University of Minnesota Duluth Ramulu, M. Source Journal of Materials Processing Technology, v 172, n 3, Mar 10, 2006, p 417 423. 3. Waterjet peening at 600MPa A first investigation. Hashish, M. Flow International Corporation Chillman, A. Ramulu Source American Society of Mechanical Engineers, Fluids Engineering Division Publication FED, v 261 FED, 2005, p 45 52. 4. Edge finishing and delamination effects induced during abrasive waterjet machining on the compression strength of a graphite epoxy composite. Ramulu, M. Department of Mechanical Engineering, Box 352800, University of Washington Colligan, K. Source American Society of Mechanical Engineers, Materials Division Publication MD, v 100 MD, Proceedings of the ASME Materials Division 2005, 2005, p 173 179 5. Low velocity impact response characterization of ...   more details



  1. TWA Flight 599

    also List of accidents and incidents on commercial airliners Air safety Delamination Air safety External ...   more details



  1. Fleet Satellite Communications System

    Image FLTSATCOM.jpg thumb FLTSATCOM Satellite FLTSATCOM also FLTSAT was a satellite communication system of the U.S. Navy which was used for UHF radio communications between ships, submarines, airplanes and ground stations of the U.S. Navy. Most of the transponders on these satellites are simple repeaters with no authentication or control over what they retransmit. This characteristic led to a subculture of pirate radio radio pirates in Brazil using modified ham radio equipment making use of the satellites without authorization. ref cite web url http www.wired.com politics security news 2009 04 fleetcom title The Great Brazilian Sat Hack Crackdown last Soares first Marcelo date 2009 04 20 work Wired magazine Wired accessdate 2009 04 22 ref Altogether eight satellites were launched in the years from 1978 to 1989 by Atlas Centaur rockets into geostationary orbit . The system became operational in 1981. The satellites were manufactured by TRW . The solar arrays of the satellites had a span of over 13.2 m. A special characteristic was an UHF transmit antenna reflector 4.9 m in diameter. The satellites had 12 transponders, which worked in the UHF range from 240 400 megahertz. Additionally FLTSATCOM 7 and 8 had an experimental EHF transponder built by Lincoln Laboratory intended to test the MILSTAR ground terminals. The first seven satellites had a launch mass of 1884 kg and the remaining two were 2310 kg, with the additional mass due to the EHF payload module. The fifth satellite reached geosynchronous orbit, but was unusable due to damage to the solar arrays and antennas. The failure was attributed to explosive delamination of the fiberglass Composite honeycomb honeycomb fairing during flight. The inside wall of the fairing extensively damaged one of the solar arrays, and bent the transmit antenna mast which prevented the antenna from deploying fully. Flight 7 was launched out of sequence after a launch failure of a Delta mission carrying the GOES G weather satellite gr ...   more details



  1. Fiber-reinforced composite

    Too few opinions date December 2010 NOTOC A fiber reinforced composite FRC consists of three components i the fibers as the discontinuous or dispersed phase, ii the matrix as the continuous phase, and iii the fine interphase region, also known as the interface ref name cantwell cite journal author WJ Cantwell, J Morton title The impact resistance of composite materials a review journal Composites year 1991 volume 22 issue 5 pages 347&ndash 62 url doi 10.1016 0010 4361 91 90549 V ref ref name serope Serope Kalpakjian, Steven R Schmid. Manufacturing Engineering and Technology . International edition. 4th Ed. Prentice Hall, Inc. 2001. ISBN 0 13 017440 8. ref . This is a type of advanced composite group, which makes use of rice husk, rice hull, and plastic as ingredients. This technology involves a method of refining, blending, and compounding natural fibers from cellulosic waste streams to form a high strength fiber composite material in a polymer matrix. The designated waste or base raw materials used in this instance are those of waste thermoplastics and various categories of cellulosic waste including rice husk and saw dust. Image Gal main.jpg thumb Fiber reinforced composite 300px right FRC is high performance fiber composite achieved and made possible by cross linking cellulosic fiber molecules with resins in the FRC material matrix through a proprietary molecular re engineering process, yielding a product of exceptional structural properties. Through this feat of molecular re engineering selected physical and structural properties of wood are successfully cloned and vested in the FRC product, in addition to other critical attributes to yield performance properties superior to contemporary wood. This material, unlike other composites, can be recycled up to 20 times, allowing scrap FRC to be reused again and again. The failure mechanisms in FRC materials include delamination , intralaminar matrix cracking, longitudinal matrix splitting, fiber matrix debonding, fibe ...   more details



  1. LUSAS

    layups for potential delamination , material damage and fatigue modelling of many types of components ...   more details



  1. Betic corridor

    Image Messinian palaeogeography.svg thumb A possible palaeogeographical reconstruction of the west end of the Miocene Mediterranian. North to the left. Red current coastline S Sorbas basin , Spain R Rifean corridor B Betic corridor G Strait of Gibraltar M Mediterranean sea The Betic Corridor , or North Betic Strait, was a strait of water connecting the Mediterranean Sea with the Atlantic Ocean that once separated the Iberian plate from the Eurasian plate through the Betic Cordillera ref name Seber1996 cite journal author Seber, D. coauthors Barazangi, M. Ibenbrahim, A. Demnati, A. year 1996 title Geophysical evidence for lithospheric delamination beneath the Alboran Sea and Rif Betic mountains journal Nature volume 379 issue 6568 pages 785 790 doi 10.1038 379785a0 ref . Its closure approximately 5.96 million years ago during the Messinian period of the Miocene epoch, precipitated the Messinian Salinity Crisis , a period when the Mediterranean Sea evaporated partly or completely ref name Krijgsman1996 cite journal author Krijgsman, W. coauthors Garc s, M. Langereis, C.G. Daams, R. Van Dam, J. Van Der Meulen, A.J. Agust , J. Cabrera, L. year 1996 title A new chronology for the middle to late Miocene continental record in Spain journal Earth and Planetary Science Letters volume 142 issue 3 4 pages 367 380 url http linkinghub.elsevier.com retrieve pii 0012821X96001094 accessdate 2008 03 01 doi 10.1016 0012 821X 96 00109 4 ref . Geology Betic corridor rock facies consist of heterozoan bioclastic carbonates and mixed siliciclastic carbonates with Conglomerate geology conglomerates appearing in local fan delta deposits. Betic deposits exhibit huge trough cross bedded structures with single troughs up to 5 m high pointing to the east in the easternmost outcrops. In central outcrops, they reach up to 15 m in height and some tens of metres in length and point both to the east and to the west. The westernmost outcrops show the largest cross bedded structures, up to 20 m in hei ...   more details



  1. Gesso

    of commercially sold, pre gessoed canvases deny that delamination takes place. Citation needed date ... oil paint, precisely because of the delamination problem. Citation needed date February 2011 Soy ...   more details



  1. Crystal River 3 Nuclear Power Plant

    the upgrade, workers discovered a delamination gap in the concrete containment building containment ...   more details




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