ASTM test methods strength measurements

ASTM D-5341. Standard Test Method for Measuring Coke Reactivity Index (CRI) and Coke Strength After Reaction (CSR). 

ASTM E 2187 Standard Test Method for Measuring the Ignition Strength of Cigarettes ASTM E 2231 Standard Practice for Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics... 

It is worth noting that ISO/IEC and ASTM test methods for many properties, in principle, are similar and the differences between the specific test methods are rather minimal. Even so, differences in measured data between the two methods, depending on the type of material, are expected, particularly with thickness-dependent properties such as impact strength, DTUL, and flexural properties stemming from the variance in test specimen dimensions and its preparation. Thus, any correlation between two sets of data is dependent on the material type, implying that one should not assume that the property values generated by the ISO test methods would always be equivalent to the values obtained by using the ASTM method with simple conversion to appropriate units. 

Test Method for Measuring Strength and Shear Modulus of Nonrigid Adhesives hy the Thick-Adherend Tensile-Lap Specimen-, and ASTM D2979, Standard Test Method for Pressure-Sensitive Tack of Adhesives Using an Inverted Probe Machine. 

Table 3 compares properties of PTT, PET, and PBT (40). They were measured on injection-molded samples using ASTM test methods. Tensile strength, flexural modulus, and notched Izod impact of PTT fall in between those of PET and PBT. All three polymers have similar electrical properties except for PET which has lower volume resistivity. The lower moisture absorptions of PTT and PBT are due to the high crystallinities from fast crystallization. 

When the AS 1160 resin is mixed with isocyanate, and cured for up to 24 h in dry (typically less than 15 % RH), a thixotropic polyurethane adhesive is formed. The adhesive is commercially used to bond metals, organic and inorganic materials, and is particularly useful for reducing the relative movement of components in multimaterial assemblies. The performance of the polyurethane adhesive requires the ultimate tensile strength (UTS) to be a minimum of 15 MPa when measured using butt tensile specimens by ASTM Test Method D2095. 

Tensile strength ASTM D4595, Standard Test Method for Measuring the Wide-Width Tensile Strength of Geosynthetics ... 

Abstract This paper describes a method of measuring the tensile properties of a bulk adhesive — including modulus of elasticity, yield stress and strain, and tensile strength and strairL The authors developed the method unaware of ASTM Test Method for Tensile Properties of Thin Plastic Sheeting (D 882). Not surprisingly, requirements founded on common sense are the same in the ASTM Standard as in the present study. 

Tables 4—6 Ust ASTM methods used for the characterization of PB and PMP. A number of specialized methods were developed for testing particular articles manufactured from polyolefins several of these determine the performance of PB and PMP film, including the measurement of the film s dart impact strength and tear strength. Dart impact strength is measured by dropping a heavy dart with a round tip on a stretched film. Tear resistance, which reflects the film s resistance to tear propagation, is measured with the Ehnendorf tear tester. Two values for the tear strength are usually reported, one in the machine dkection of the film and the other in the transverse dkection. Pipes manufactured from PB are tested by pressurizing them internally with water the time-to-burst failure is determined at various temperatures (46). The standard test method for haze and luminous transmittance (ASTM D1003) is used for the measurement of PMP optical characteristics.

Kauri-butanol number A measurement of solvent strength for hydrocarbon solvents the higher the Kauri-butanol (KB) value, the stronger the solvency the test method (ASTM D1133) is based on the principle that Kauri resin is readily soluble in butyl alcohol but not in hydrocarbon solvents and that the resin solution will tolerate only a certain amount of dilution and is reflected as cloudiness when the resin starts to come out of solution solvents such as toluene can be added in a greater amount (and thus have a higher KB value) than weaker solvents such as hexane. 

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