Strength characteristic

A conservative assumption is that O can be set equal to zero. When the stress O equals the characteristic strength O the faUure probabUity is 63.2%. Under conditions other than tensUe loading, the stress distribution in a body is inhomogeneous. To account for this, a loading factor k is used to calculate the effective volume under stress and kVreplaces V. 

Material Characteristics Strength and Stiffness Toughness Short-Term Heal Resistance Long-Term Heal Resistance Environ- mental Resistance Dimensional Accuracy in Molding Dimensions Stability Wear and Frictionat Properties Point Subtotal Cost Point Total... 

Fibres spun out of copolymers 2 by the wet process from dimethylformamide (DMF) solutions have the following characteristics strength 23-27 g.f./tex (2,5-3 g/denie), elongation 15%. 

Fig. 5. Estimated characteristic strength of typical biological particles of interest to biotechnology data are based on in-situ measurements of the minimum stresses necessary to cause permanent breakage of particles. For comparison data are shown based on Van der Waals and pendular liquid bridges between two 10-pm particles, 0.01 pm apart...

Several conclusions result from the preceding equations They reveal that the dimensionless parameter of the system is the fragmentation number (Fa) with the characteristic strength given by... 

Vinyl monomers can be polymerized using solution, bulk, suspension, and emulsion techniques. Each has its own characteristic strengths and weaknesses. 

Bonds have characteristic strengths and lengths. Table 13.3 gives the energies of several bonds and the bond lengths in organic compounds. 

Q Predict the general characteristics (strength, elasticity, crystallinity, chemical reactivity) of a polymer based on its structure, and explain how its physical characteristics change as it is heated past Tg and Tm. 

Each of the previously mentioned interconnection architectures possess characteristic strengths and weaknesses, requiring evaluation on the basis of several criteria. These architectures may be evaluated on the basis of 1) system reliability, 2) expansion capability, and 3) cost ... 

Characteristic strength, Sc (GPa) Fracture mirrors Pull-out length, h 1.2-3.0... 

Figure 8. The characteristic strength e versus to. The full line indicates the theoretical estimate of the characteristic strength as a function of to, while the values of that are numerically decided at three relatively small ms are marked by x.

Each specific bond has its own characteristic strength, and extensive tables of data are available. For example, a C -II bond in methane haa a bond diasociation energy D = 43 A kJ/rnot (104.S kcal/moU, meaning that 438.4 kJ/moL must be added to break a C H bond of methane to give the... 

CA 69, 60433 (1969) [A review is given of slurry expls and slurry blasting agents. The boostering, detonation characteristics, strength, and sensitivity of these materials are described. Included are 33 refs]... 

The Weibull modulus, m, describes the scatter of strength data the distribution is the wider the smaller m is. ctq is the characteristic strength and Fq is the corresponding reference volume. Of course the probability of surviving (the reliability, S) is F = 1 - F. Freudenthal [8] showed for sparsely distributed flaws, that the probability of failure only depends on the number of destructive flaws, s, occurring in a specimen of size and shape, S ... 

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