
	Where results make sense

Topic: Necking (engineering)

Related Topics

Black necked Grebe

Red necked Wallaby

Ring necked Duck

Red necked Grebe

Red necked Stint

Throgs Neck Bridges

Throgs Neck

Brown necked Raven

Black necked Stork

Red necked Nightjar

Great Neck, New York

In the News (Fri 25 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	[No title]
		Engineering strain, e, is defined as the ratio of increase in length of line to original length.
		The horizontal axis is the smallest engineering strain in the plane of the sheet or the minor strain e
		The strain at the onset of localized necking (failure points in the diagram) is poltted as a function of the minor strain (H-19).
	www.a-sp.org /database/viewsec.asp?sec=246 (17764 words)

	Engineering Stress-strain Curve
		The engineering tension test is widely used to provide basic design information on the strength of materials and as an acceptance test for the specification of materials.
		The strain used for the engineering stress-strain curve is the average linear strain, which is obtained by dividing the elongation of the gage length of the specimen, d, by its original length.
		Since the engineering stress-strain curve often is quite flat in the vicinity of necking, it may be difficult to establish the strain at maximum load without ambiguity.
	www.key-to-metals.com /Article107.htm (1626 words)

	[No title]
		Localized necking occurs when the stress state leads to an increase in the surface area of the sheet at the cost of a reduction in the thickness.
		There are two kinds of neck, i.e., the diffuse neck (so called because its extension is much greater than the sheet thickness), and the localized necking (through thickness thinning), which is terminated by final separation or fracture.
		As early as in 1952, Swift [1952] developed a criterion for predicting the onset of diffuse necking with the assumption that plastic instability occurs at a load maximum for proportional loading.
	www.me.mtu.edu /~mom/update (8651 words)

	Chapter 2 (Site not responding. Last check: 2007-10-16)
		Both engineering stress-engineering strain and true stress-true strain curves are shown.
		Is the strain at the onset of necking related to the strain hardening exponent n?
		The start of necking is easier to see on the engineering stress-engineering strain curve.
	www.menet.umn.edu /degarmo/Chapter2/tensileinstability.html (202 words)

	2000-2001 UCI Catalogue: Engineering
		Biochemical Engineering is concerned with the processing of biological materials and processes that use biological agents such as living cells, enzymes, or antibodies.
		Biochemical Engineering, with integrated knowledge of the principles of biology and chemical engineering, plays a major engineering role in the rapidly developing area of biotechnology.
		The principle objectives of the graduate curriculum in Chemical and Biochemical Engineering are to develop and expand students' abilities to solve new and more challenging engineering problems and to promote their skills in independent thinking and learning in preparation for careers in manufacturing, research, or teaching.
	www.editor.uci.edu /00-01/engr/engr.4.html (4044 words)

	Comments on: Necking relieves engineering stress (Site not responding. Last check: 2007-10-16)
		Necking doesn't help with those unless it's on the anotomy major down the hall.
		The "engineering stress" is the force divided by the original cross sectional area.
		Necking is when the material gets skinnier in the middle.
	fallenearth.org.cob-web.org:8888 /blogs/madge-wp/2004/12/13/necking-relieves-engineering-stress/feed (508 words)

	Neck Pain Relief -- Recommendations and Resources (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-16)
		The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk.
		The clavicle or collar-bone forms the lower limit of the neck, and laterally the outward slope of the neck to the shoulder is caused by the trapezius muscle.
		The Necks are an ambient jazz trio from Sydney, Australia, comprising Chris Abrahams on piano and Hammond organ, Tony Buck on drums and Lloyd Swanton on bass guitar and double bass.
	www.becomingapediatrician.com.cob-web.org:8888 /health/103/neck-pain-relief.html (912 words)

	Necking - Wikipedia, the free encyclopedia
		Behavior exhibited by (usually ungulate) animals in which the neck is used as either a means of caress or as a weapon; often intrasexual and associated with mating, sexual selection, and homosexual relations in the giraffe.
		The process by which a ductile material deforms under tension forming a thin neck; see Necking (engineering) and Manufacturing.
		Necking down: reducing the diameter of a firearm's barrel to fit a smaller cartridge [1].
	en.wikipedia.org /wiki/Necking (168 words)

	Tensile strength - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-16)
		This is an important concept in engineering, especially in the fields of material science, mechanical engineering and structural engineering.
		When necking becomes substantial, it may cause a reversal of the engineering stress-strain curve, where decreasing stress correlates to increasing strain because of geometric effects.
		This is because the engineering stress and engineering strain are calculated assuming the original cross-sectional area before necking.
	en.wikipedia.org.cob-web.org:8888 /wiki/Tensile_strength (1173 words)

	DeGarmo - Chapter 2 (Site not responding. Last check: 2007-10-16)
		At necking the load carrying capacity starts to decrease (load carrying ability decreases, strength which is a stress continues to increase).
		The onset of necking can be associated with the start of decreasing stress on the engineering stress-engineering strain plot.
		Since there is a relation between engineering strain and true strain, the true strain at necking can be found if the engineering strain at necking is known.
	www.menet.umn.edu /degarmo/Chapter2/soln2instability.html (435 words)

	Abstract Necking Paper (Site not responding. Last check: 2007-10-16)
		A critical review of some existing criteria for diffuse necking in sheet metals is given.
		In this paper, a generalization of the existing diffuse necking criteria for materials that can be described by Hill's new normally anisotropic yield function is presented.
		It predicts a significant effect of Hill's yield surface shape factor on the critical principal strain in the range of negative minor strains while in the range of biaxial tension this influence is small.
	personal.stevens.edu /~sesche/abs_neck.htm (148 words)

	Frontiers in Geophysical Fluid Dynamics II Posters - Ocean Sciences [OS]
		Starting with the simple jet and plume models of Morton, Taylor and Turner (1956), time dependent models have been developed which show the effect of temporal variation of the buoyancy flux at the boundary where plumes or puffs are formed.
		It is shown that reducing the buoyancy flux at the source of a plume causes a transitional `necking' region to form in the plume.
		The necking region has lower buoyancy closer to the origin and higher buoyancy further away.
	www.agu.org /meetings/os06/os06-sessions/os06_OS16I.html (2316 words)

	RECENT ADVANCES IN FRACTURE--A Symposium Dedicated to Emeritus Professor Frank A. McClintock
		Also, with Af as the minimum cross-sectional area of the neck at fracture, ln(An/Af) measures the average longitudinal plastic strain perpendicular to the plane of the neck accumulated from the point of necking to fracture.
		For a specimen with gradient in toughness along its length, for example a transverse-weld specimen the neck is expected to initiate at the section least resistant to microvoid growth.
		Localized necking is one of the most common failure modes limiting formability in technological sheet metal forming operations.
	www.tms.org /Meetings/Annual-97/Program/Sessions/PS314A.html (3579 words)

	Necking (engineering) - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-16)
		In mechanical engineering, necking is a mode of ductile flow of material in tension.
		Examples of necking can be seen by axially and oppositely stretching Silly Putty or pulling a plastic grocery bag.
		This technique is also used in the wire-making industry where, by pulling on a thicker length of wire, it becomes thinner, longer, and more ductile.
	en.wikipedia.org.cob-web.org:8888 /wiki/Necking_(engineering) (196 words)

	The Society of Rheology: 72nd Annual Meeting (Feb 2001) Paper EF1
		However, little strain-hardening is obtained and observations show that the filament fails at moderate strains by a necking instability.
		By contrast, chain stretching and pronounced strain-hardening are observed in all the unentangled fluids which prevents filament necking, but ultimately leads to an elastic endplate instability.
		The onset of chain stretching in semi-dilute and concentrated entangled polymer solutions occurs at very high deformation rates and can be identified by the onset of strain-hardening and by the visual detection of transition from necking failure to elastic end-plate instability.
	www.rheology.org /sor012/abstract.asp?PaperID=121 (349 words)

	necking - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "necking" is defined.
		necking : The American Heritage® Dictionary of the English Language [home, info]
		Words similar to necking: caressing, cuddling, fondling, gorgerin, hugging, kissing, neck, petting, smooching, snuggling, more...
	www.onelook.com /?w=necking (207 words)

	UCI Catalogue: Chem. and Biochem Engineering
		Courses in linear algebra, differential equations, organic chemistry, thermodynamics, and chemical engineering calculations are required for junior academic standing, and it is recommended that these courses be completed prior to transfer.
		Chemical Engineering majors must consult at least once every year with the academic counselors in the Undergraduate Student Affairs Office and with their faculty advisors.
		Prerequisites: Engineering E54; MAE150 or ChE150; or consent of instructor.
	www.editor.uci.edu /97-98/engr/engr.4.html (3368 words)

	-Plastics Engineering FAQ - Eng-Tips
		This alignment or orientation causes the molecules to come closer together and results in a lessening of the free volume.
		This phenomenon is commonly viewed as “necking” or yielding in a test specimen, when the center of the specimen begins to “thin” as a result of extensional alignment.
		Slippage releases the stress on those molecules that can actually move (as well as those that it might have been “pulling” on), but that slippage correspondingly increases the load on those entangled or restrained chains that cannot relieve the stress.
	www.eng-tips.com /faqs.cfm?fid=999 (481 words)

	Covert Engineers, Inc. \| Experience & Qualifications
		Covert Engineers, Inc. has specialized in engineering services to the food processing and packaging industry since 1988.
		CEI provides engineering services to the food processing industry.
		Our role on projects varies from basic consultation, acting as an extension to the owner's engineering staff, providing services for a portion of the scope under another engineering firm's direction, to full service engineering and overall project management.
	www.hevanet.com /cei/experience.htm (152 words)

	[No title]
		Through the keyword input card of the program, the user-defined history variables can be correctly stored and written into the output file such that the failure criterion can become active.
		The post-processing of the output file enables the display of the calculated any-user-defined history variables at any output step including the limit stresses and strains at localized necking.
		The material subroutine code developed from this project can be directly applied to the stamping FE simulation in automobile and other industries.
	www.engin.umd.umich.edu /hpceep/tech_day/archives/2000/ME/report4.doc (517 words)

	spin necking (English to Italian translation glossary) newsletter,Media / Multimedia,Tech/Engineering
		Changing market conditions in the following years led to a strategic withdrawl from industrial paints and varnishes to concentrate on can coatings and inks.
		This proved to be a wise decision, spin necking of beverage cans was a new technology at the time and XXX were the first to developed exterior coatings and inks suitable for the process.
		Il "necking process" è la lavorazione attraverso cui si forma il collo della lattina.
	www.proz.com /kudoz/1663752 (238 words)

	Executive Jobs and Recruiters: Manager/Director Engineering/Projects/Technology - Northwest USA
		Insure all aspects of project are adequately met, as and when required, design, development, capital justification, engineering, construction, installation, staffing, start-up, SOP’s, PM’s, spares, operating supplies, raw materials, operating efficiencies, yields, etc. Driver of data based decisions How, when, where, what data to gather, and how to interpret.
		Insure all aspects of project are adequately met as and when required, design, development, capital justification, engineering, construction, installation, staffing, start-up, SOP’s, PM’s, spares, operating supplies, raw materials, operating efficiencies, yields, etc. How, when, where, what data to gather, and how to interpret.
		Responsible for management function of Project Engineering Department whose mission was to “insure that production capability meets management requirements.” Supervised duties of one to three direct reports.
	www.ritesite.com /13677.cfm (1315 words)

	necking - strizione (English to Italian translation glossary) Mechanics / Mech Engineering,Tech/Engineering
		necking - strizione (English to Italian translation glossary) Mechanics / Mech Engineering,Tech/Engineering
		The KudoZ network provides a framework for translators and others to assist each other with translations or explanations of terms and short phrases.
		Is necking provided at the soft jaw corner?
	www.proz.com /kudoz/1607272 (85 words)

	The Society of Rheology: 70th Annual Meeting (Oct 1998) Paper EE3
		Such fluids exhibit much less significant strain-hardening than is typically observed in dilute and semi-dilute solutions such as Boger fluids, and the need for comparison between experimental observation and numerical calculation of the resulting fluid dynamics is correspondingly greater.
		The onset of pronounced filament necking during the imposed elongation and the time to breakup following cessation of stretching are both found to be sensitive functions of the transient extensional viscosity and the magnitude of strain-hardening in the test fluid.
		Finite element calculations provide good agreement with the experiments and also with a one-dimensional slender filament theory for break-up of a viscoelastic fluid column.
	www.rheology.org /sor98a/abstract.asp?PaperID=241 (227 words)

	esche (Site not responding. Last check: 2007-10-16)
		Research activities in the areas of manufacturing, integrated product and process design, metal forming, prediction of microstructure development in metals, remote sensing and control, remote experimentation, numerical methods, FEM.
		Esche, S. and Shivpuri, R. A consistent criterion for diffuse necking in sheet metals using Hill's 1979 yield surface.
		Journal of Engineering Materials and Technology, Transactions of the ASME, Vol.
	www.stevens.edu /engineering/me/People/esche.html (671 words)

	Model Pile Pull-Out Tests Using Polyethylene Sheets to Reduce Downdrag on Cast In Situ Piles
		Eight model pile pull-out tests were conducted using three reinforced concrete circular model piles with different surface conditions (smooth, smooth with necking and bulging, and rough) in combination with three different LDPE sheet arrangements (one-sheet, two-sheet, and three-sheet).
		The pile was embedded partially in Ottawa sand with a surcharge of 19.3 kPa on sand surface.
		However, the presence of necking and bulging was found to increase the side resistance up to 40 % for the plain pile without LDPE sheets.
	www.astm.org /JOURNALS/GEOTECH/PAGES/532.htm (299 words)

	Strength Coefficient and Strain-Hardening Exponent (Site not responding. Last check: 2007-10-16)
		A metal is deformed in a tension test into its plastic region.
		At one point in the tensile test, the gage length = 2.5 in and the corresponding engineering stress = 24000 psi; at another point in the test prior to necking, the gage length = 3.2 in and the corresponding engineering stress = 28000 psi.
		I'm so accustomed to posting physics questions that I didn't even realize there was an engineering homework help forum as well.
	www.physicsforums.com /showthread.php?p=1068431#post1068431 (414 words)

	Abstract - UF Civil and Coastal Engineering (Site not responding. Last check: 2007-10-16)
		Variations on the neck region width have been modeled to simulate a plastically deformed region about the neck centerline.
		Final results for four node shell elements and eight node brick elements have been compared for A36 mild steel.
		Models that showed unloading after necking has occurred were also run using HSLA80 high strength steel for further comparison to lab test results.
	www.ce.ufl.edu /research/structural/s_anderson.html (181 words)

	Category:Mechanical engineering - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-16)
		Mechanical engineering is the application of physical principles to the creation of useful devices, objects and machines.
		The main article for this category is Mechanical engineering.
		There are 18 subcategories to this category shown below (more may be shown on subsequent pages).
	en.wikipedia.org.cob-web.org:8888 /wiki/Category:Mechanical_engineering (102 words)

	Mechanical Behavior of a Semicrystalline Polymer Before Necking. Part I: Characterization of Uniaxial Behavior. Polymer ... (Site not responding. Last check: 2007-10-16)
		Mechanical Behavior of a Semicrystalline Polymer Before Necking.
		Try HighBeam Research for seven days of free unlimited access to the most powerful research engine on the web.
		Access superior sources and sophisticated research tools, including the HighBeam Library archive of over 32,000,000 articles from thousands of business and consumer magazines and journals, transcripts of TV and radio news and entertainment broadcasts, maps, images and more!
	newssearch.looksmart.com.cob-web.org:8888 /p/articles/mi_hb3367/is_200101/ai_n8100269 (257 words)

Try your search on: Qwika (all wikis)