Comparison of tensile properties

Figure 5.133 Comparison of tensile properties of fiber-reinforced bone cement (PMMA) and human compact bone. Reprinted, by permission, from Concise Encyclopedia of Composite Materials, A. Kelly, ed., p. 270, revised edition. Copyright 1994 by Elsevier Science Publishers, Ltd.

TABLE 1. Comparison of tensile properties of bis(4-isocyanatocyclohexyl) methane-basedpolydimethylsiloxane-urea and polyether/polydimethylsiloxane-nrea segmented copolymers. 

Fig. 11. Comparison of tensile properties of MIG-welded plate as-welded, bead-off, at 75° and -320°F.

Comparison of tensile properties of polyester and polypropylene fibres (Source-. From Reference 57.)... 

Comparison of tensile properties of base metal and two-pass, GTAW transverse welded specimens... 

Table 12.10 Comparison of tensile properties of curaua fiber green composite fabricated using DM and PS methods [28].

Fig. 37 Comparison of mechanical properties of PTFE-EPDM composites (a) tensile strength at break (trB) and elongation at break (eB) (b) moduli Ml00 and M200. The horizontal line indicates the M100 of the composite containing nonmodified PTFE (L100XokGy-EPDM)...

Figures 3.34 and 3.35 show the relationship of tensile strength and ultimate (break) elongation with temperature for perfluoroalkyl vinyl ether modified perfluoroalkoxy polymer (PFA). Figures 3.36 through 3.38 show a comparison of the properties of PFA with MFA, which is perfluoromethyl vinyl ether (PMVE). The common measurement technique for tensile properties of fiuoropiastics is ASTM D1708.

In the case of both the mechanical properties studied (tensile strength and elongation), on comparison of the properties of the component polymers and the blends, the non-irradiated blends showed negative deviation from the linear additivity of the properties. However, on irradiation, this negative deviation was changed into positive deviation. Some of the mechanical... 

Tensile-elongation properties and the melt index can he determined by using small samples such as those cut directly from a part. Part uniformity can be determined by using samples taken from several areas of the molded part. Samples also can be taken from an area where failure has occurred or continues to occur. This permits comparisons of material properties in a failed area with properties measured either at an unfailed section or from a sample of new material. Samples also may be taken from within a material blend to ensure that a uniform blend is being supplied. The results of such testing can be used either for evaluation of part failure or in the acceptance testing of incoming materials or parts. 

Table 36-2. Comparison of Some Properties, as well as the Price per Mass, Q, and Price per Volume, Pr, of Some Unfilled Working Materials, p, Density E, Modulus of Elasticity a s. Tensile Yield Strength T/, Heat Distortion Temperature under a Load...

Table 3 also provides a comparison of cured properties of aerobic with second-generation acrylic adhesives. The data shows that, while tensile strengths are similar, the toughness and durability parameters are superior for the aerobics. 

Table 3 Comparison of the experimental and theoretical values of tensile properties.

A list of tensile properties of various LCP fibers in comparison with those of typical thermoplastic fibers is made in Table 8.4. It should be noted that the fiber properties of TLCPs in Table 8.4 are not for commercial fibers and should be used only for a comparison purpose. The fiber spinning, orientation, and properties of TLCP fibers have been well reviewed in the literature [121,122],... 

The comparison of mechanical properties of EPM vulca-nizates filled with micrometer and nanometer sized Fe304 shows the effect of fillers size and its influence on vulcani-zates tensile strength (Fig. 6). The results suggest, that the optimal content of micro sized Fe304 is 80 phr and 60 phr for nano sized Fe304. 

Oriented films are available that have been stretched in the machine direction. The uniaxial orientation has some reinforcement effect on the film in the transverse direction. Tables 6.28 through 6.30 give the characteristics and properties of these PFA and ETFE films, which are available in one or two side adherable, and dimensionally stabihzed (by heat) grades. A comparison of tensile strength data from Tables 6.26 and 6.27 with those in Table 6.30 provides an appreciation for the impact of PFA and ETFE film orientation. 

The technical differences between ASTM Tensile Properties of Plastics D 638 and ISO 527-1 2 Plastics Determination of Tensile Properties include specimen dimeiisions (Table 1), speeds of testing, and modulus of elasticity calculations. Each of these conditions can affect the test results in Afferent ways and to varying degrees. By measuring the tensile properties of ASTM and ISO specimens molded firom the same thermoplastic resins, the relationship between the ASTM D 638 and ISO 527 test methods was studied. Since the ASTM D 638 and ISO 521 test methods are technically different the summary statistics from these test methods are viewed as two distinct populations. Therefore, descriptive statistics rather than inferential statistics were used in this comparison. No attempt was made to determine if the results from the two test... 

Figures 1-15 are graphs showing comparisons of the effects of the three radiation sources. Due to limited space it is not possible to include here a separate graph comparing the effects of the three radiation sources for each physical property and each sample. We have chosen to illustrate the differences between the most and least crystalline PPs, samples 1 and 5 in Figures 1-8. Because of their novelty we have also illustrated the behavior of the metallocene PPs, Samples 6 and 7 in comparison to the highly crystalline Z-N homopolymer. Sample 1 in figures 8-12. Finally, we have included Figures 13-15, comparisons of tensile elongation at break for every sample after exposure to each of the three radiation sources.

Mechanical properties of plastics can be determined by short, single-point quaUty control tests and longer, generally multipoint or multiple condition procedures that relate to fundamental polymer properties. Single-point tests iaclude tensile, compressive, flexural, shear, and impact properties of plastics creep, heat aging, creep mpture, and environmental stress-crackiag tests usually result ia multipoint curves or tables for comparison of the original response to post-exposure response. 

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