Tensile properties, determination

Table 1.9 Tensile Properties Determined from a Stress-Strain Curve per ASTM D638...

Microtensile Specimen n A small specimen as specified in ASTM D1708 for determining tensile properties of plastics. It has maximum thickness 3.2 mm and minimum length 38.1 mm. Tensile properties determined with this specimen include yield strength, tensile strength, tensile strength at break and elongation at break. 

ISO 527, Plastics Determination of Tensile Properties, ISO, Geneva, Swit2erland, 1991. 

Rigid lenses have tensile properties in the tens of MPa (thousands of g/mm ), which give rise to excellent vision but poorer comfort. Although tensile properties can be determined for these materials, lens performance is not as sensitive to these values as for hydrophilic lens materials. 

NOTE 1 Tensile properties shall be determined bp tests on cylindrical specimens conforming to the requirements of ASTM A-STO, 0J% offset method. 

Tensile Properties. The tensile properties, except elongation, of the upset ends of the casing and tubing shall comply with the requirements given for the pipe body (see Table 4-141). In case of dispute, the tensile properties (except elongation) of the upset shall be determined from a tensile test cut from the upset. 

In conclusion, it may be mentioned that the characterization of the mechanical behaviour of materials has many facets. Different methods of testing pertain to different aspects and conditions. The tensile properties, as determined by the tensile test, correspond to slowly applied single load applications. Rapidly applied and cyclic load applications respectively provide the impact and the fatigue properties. Hardness is an analog of the tensile strength which a tensile test measures. The creep test pertains to mechanical behaviour under long term loading at elevated temperatures. 

Furthermore, it has to be noted that both VOCI3- and V3.-9-EPDMs have multimodal GPC profiles signifying the presence of high MW fractions, yet they have the greatest disparity in vulcanizate tensile properties, again suggesting MWD to be not a major determinant in defining the observed tensile differences. 

ISO 527-4, Plastics - Determination of tensile properties - Part 4 Test conditions for isotropic and orthotropic fibre-reinforced plastic composites, 1997. 

Stephenson et al. [15] first monitored the tensile properties and determined no damage for photon energies less than 3.2 eV (74kcal/mol or 388 nm) by extrapolation. If this is true, then it implies that photodegradation out to quite... 

Tensile properties and flexural modulus were determined on 20 mil pressed films in accordance with ASTM D882 and D790, respectively. Izod (notched) impact strength was determined on compression molded plaques in accordance with ASTM D256. Water vapor transmission was determined on 5 mil pressed films in accordance with ASTM E96. 

ISO 527-4 1997 Plastics - Determination of tensile properties - Part 4 Test conditions for isotropic and orthotropic fibre-reinforced plastic composites ISO 527-5 1997 Plastics - Determination of tensile properties - Part 5 Test conditions for unidirectional fibre-reinforced plastic composites ISO 1798 1997 Flexible cellular polymeric materials - Determination of tensile strength and elongation at break... 

ISO 1926 1979 Cellular plastics - Determination of tensile properties of rigid materials ISO 4587 2003 Adhesives - Determination of tensile lap-shear strength of rigid-to-rigid... 

ISO 4433-3 1997 Thermoplastics pipes - Resistance to liquid chemicals - Classification -Part 3 Unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI) and chlorinated poly(vinyl chloride) (PVC-C) pipes ISO 6259-2 1997 Thermoplastics pipes - Determination of tensile properties - Part 2 Pipes made of unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly(vinyl chloride) (PVC-C) and high-impact poly(vinyl chloride) (PVC-HI)... 

ISO 10618 2004 Carbon fibre - Determination of tensile properties of resin-impregnated yarn... 

ISO 11566 1996 Carbon fibre - Determination of the tensile properties of single-filament specimens... 

Tensile properties were determined according to ASTM D638 using an Instron tensile tester equipped with a 500 kg load cell. 

The moisture uptake in the cured samples appears to have no effect on the room temperature tensile properties as demonstrated in Table I. A critical study to be done is to determine the moisture effect on properties at elevated temperatures. 

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