Yield deformation

The ratio is computed by dividing the element s maximum deformation to by the yield deformation. 

Both the yield stress and the yield deformation increase with increasing pressure... 

Information is also directly available about the electron distribution in the B-0 bond from x-ray diffraction studies (Gajhede et al., 1986 Kirfel et al., 1983) and, indirectly, from studies of the gradient of the electric field at B and O (Snyder et al., 1976 Gajhede, 1985 Tossell and Lazzer-etti, 1988a Tossell, 1990b). For solid lithium metaborate, LiBO, with chains of BO, triangles, x-ray studies yield deformation densities that do... 

Miller P, Kramer EJ (1988) Proc. of 7th International Conference on Yield. Deformation and Fracture of Polymers, The Plastics and Rubber Institute, London, p 81.1... 

Lucey, J.A., Teo, C.T., Munro, P.A., and Singh, H. (1997). Rheological properties at small (dynamic) and large (yield) deformations of acid gels made from heated milk. J. Dairy Res. 64,591-600. 

Yield Deformation - The strain at which the elastic behavior begins, while the plastic is being strained. Deformation beyond the yield deformation is not reversible. 

Lake, G. J., Conference Proceedings of the Physical Institute. The Yield Deformation and Fracture of Polymers Cambridge (1970). 

Lake, G.J., 1970. In Proceedings of International Conference on Yield Deformation Fracture Polymers, Cambridge. Institute of Physics, London, p. 53. 

The reinforcement is usually high-yield deformed steel bars (500 MPa) with diameter and spacing as defined by the design method employed. 

S. Laihonen, U.W. Gedde, P.E. Wemer, M. Westdahl, P. jaSskelainen, G.J. Lake, Conference Proceedings of the Physical Institute. The Yield Deformation and Fracture of Polymers (Cambridge, 1970)... 

Intermediate class (v 0.15 mmol/cm and Cqo 7.5) demonstrating combined crazing/shear yielding deformation habit. Examples are some grades of PMMA, PVC, and POM. 

Steel springs (the reinforcement) is shown in Fig. 19.7a, whereand are axial force and deformation of the steel spring, respectively, and /j, dy are the yield strength and yielding deformation. The unloading stiffness is assumed equal to the initial stiffness of the steel spring. 

Since the yield deformation computed in Step 6 differs significantly from the initial estimate of Uy =0.78 in,... 

The integration of the aforementioned expression yields deformation as a function of time, namely,... 

Zhurkov, S.N., Novak, I.I., Slutsker, A.I. et al. (March/April 1970) Connection between destruction of chain molecules and formation of sub micro cracks in stressed polymers in Proceedings of the Conference on the Yield, Deformation and Fracture of Polymers, Cambridge, Session 3, Talk 3, pp. 1-6. 

However, we know that this simple rule is not sufficient when the adherends yield [1]. Observation of actual test failures with a wide variety of adhesives and adherends suggests that adherend yield has a very serious deleterious effect on joint strength. This is because a typical structural steel or aluminium alloy can extend under yield by a much higher strain than is possible for most structural adhesives. The adherend yield deformation can therefore rip the adhesive apart. We can use this knowledge to obtain a second prediction of joint strength which is particularly useful for ductile adherends. 

Similar considerations control the resistance to debonding of adhesives. In some cases, when the interface is very strong, the process is identical to that in bulk materials. The joint fails by cohesive failure within the adhesive layer. However, even when the crack propagates along an interface between an adhesive and a substrate, the ability of the system to resist the propagation of such a crack depends on the ability of the adhesive to absorb energy by a yielding deformation near the crack tip. 

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