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shear testing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses composite testing procedures, including tension, compression, shear, flexure, and fracture toughness testing as well as adhesive shear, peel, and honeycomb flatwise tension testing. It also discusses specimen preparation, environmental conditioning, and data...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240201
EISBN: 978-1-62708-251-8
... Abstract The mechanical behavior of a material is its response to an applied load or force. Important mechanical properties are strength, hardness, stiffness, and ductility. This chapter discusses three principal ways in which these properties are tested: tension, compression, and shear...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
... high contact angles resist spreading on the solid, giving smaller droplet diameters. Powder-binder separation is reduced by a low contact angle, but even so, separation occurs at very high shear strain rates due to density differences. Testing for powder-binder adhesion is common for paints, inks...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... infrared sensor. In many polymer systems, the thermal work influenced by high damping and low thermal conductivity contributes to micromechanisms of permanent deformation, including craze formation, shear bands, voids, or even microcracks ( Ref 8 ). Fig. 4 Plot showing the effect of increasing test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
... determine which temperature to use in obtaining long-term data from short-term tests. This is essentially true for linear viscoelastic behavior in the absence of a phase change. Mechanical tests under tensile, compressive, flexural, and shear loading can be performed as either short...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... measured in compression, shear, and tension ( Ref 4 ). For PC, this dependence results in a yield stress difference between tensile and compressive data of only approximately 6 to 8% at room temperature and over a range of strain rates from 10 −5 to 10 −1 /s. The compressive yield stress for PC is higher...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780259
EISBN: 978-1-62708-281-5
... asperity. Two friction dissipation zones are shown. The interfacial shear zone is a very thin layer (approximately 100 nm) at the surface. Slip may occur at the interface for some polymeric materials, but it more commonly occurs within the polymer itself, because the adhesive bond between the asperity and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... length should always be given. Plastic deformation in crystalline materials occurs by a process of shear (see Chapter 3, “Mechanical Properties and Strengthening Mechanisms,” in this book). The actual measured shear strengths of real engineering materials are often several orders of magnitude...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... epoxies, the crack opening displacement is quite small. At the other extreme is the elastomer, or rubber, where the crack opening displacement is so large that the process is usually referred to as tearing. The crack opening displacement can reflect two extremes in deformation behavior: shear yielding or...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720117
EISBN: 978-1-62708-305-8
... strength and ductility. It is good practice to examine the test piece surface for deep scratches, gouges, edge tears, or shear burrs. These discontinuities may sometimes be minimized or removed by polishing or, if necessary, by further machining; however, dimensional requirements may often no longer be...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910427
EISBN: 978-1-62708-250-1
... that are the most expedient for the investigation. For example, it might seem advantageous to obtain flat, uniform disk specimens by machining slices from an extruded rod rather than by shearing or stamping test coupons from rolled sheet (and avoiding residual stresses in the sheared edges). However...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610025
EISBN: 978-1-62708-303-4
... embrittlement. The chapter also covers compression, shear, and torsion testing, the prediction of yielding, residual stress, and hardness. compression hardness notched tensile test shear stress-strain curve tension MANY MATERIALS, both during initial fabrication and later when placed in service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... Abstract This chapter addresses the challenge of selecting an appropriate stress-corrosion cracking (SCC) test to evaluate the serviceability of a material for a given application. It begins by establishing a generic model in which SCC is depicted in two stages, initiation and propagation, that...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... associated with shear stresses upon ejection; such microcracks fail to heal during sintering. Because of their orientation parallel to the tensile axis of standard test bars, they have little influence on the measured tensile properties of the bars, but are presumed to be a cause of severe anisotropy of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270141
EISBN: 978-1-62708-301-0
...-defined chevron marks along the fracture surface that end in a shear lip on the convex side. Further examination using a SEM shows that the failure was due to overload. Based on these observations and the results of tensile testing and microstructural analysis, investigators concluded that a sudden impact...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040025
EISBN: 978-1-62708-300-3
... = l) is twisted at a given rotational speed; the torque T and the number of rotations, θ (in radians), are measured. The average shear stress, τ, in the gage section is given by: (Eq 4.16) τ = T 2 π r 2 t The shear strain, γ, is: (Eq 4.17) γ = r θ 1...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850334
EISBN: 978-1-62708-260-0
... material is one with constant yield stress. A material that can be plastically deformed in the uniaxial tension test will not deform plastically under a hydrostatic pressure, even if the applied load significantly exceeds the material’s yield strength. Plastic deformation requires either shear-stress or...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270082
EISBN: 978-1-62708-301-0
..., investigators concluded that the rotor blade encountered a foreign object in flight causing the tip to shear off. tail rotor blades tearing visual examination In a helicopter, during flight, one of the three tail rotor blades sheared off at the outboard rib trailing edge. The tip had...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270168
EISBN: 978-1-62708-301-0
... shearing of the screws that hold it in place. They also provided recommendations to remediate the problem. locking screws low pressure turbine discs macrostructural evaluation SEM fractography visual examination During cyclic spin tests on an LP turbine disc of an aircraft engine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... range of materials. Nondestructive Use requires some discretion because cracks/bonds, etc. normal to wave may give false reading. Specialized equipment required B.6.2 Shear waves. As B.6.1, but with wave angled to surface Volumetric incidence/extent/ location/orientation of cracks and defects in...