Determination of tensile strength

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 6922 1987 Adhesives - Determination of tensile strength of butt joints... 

Determination of tensile strength at break, tensile stress at yield, elongation at break, and stress values of rubber in a tensile test Physical testing of rubber Part A2 Method for determination of tensile stress-strain properties... 

Data Analysis. Ten paper samples were sealed in each of the sample tubes to allow replicate determinations of tensile strength and reflectance. Rate constants at each pH were estimated by averaging at least three determinations for sample tubes exposed for different periods of time at 90°C. Thus, the data points shown in Figures 5-8 are averages. 

ISO 1798-83 Polymeric Materials, Cellular Flexible —Determination of Tensile Strength and Elongation at Break, 2 pp... 

For these reasons, Rumpf proposed the determination of tensile strength of agglomerates for scientific investigations. Data from such tests can be compared with each other, approximated by physical models, and described by theories. Because, with a high degree of probability, failure occurs always due to the highest tensile strain, Rumpf s proposal is justified. 

Figure 45(c) shows in principle the adhesive method for the determination of tensile strength. 3 Cylindrical agglomerates with two parallel, flat ends are centrically cemented between two so-called adapters. To eliminate bending stresses it is necessary to machine spherical or nonsymmetrical agglomerates into cylindrical specimens using a special method (Figure 47). This sample is fastened to thin wires and subjected to tensile forces in a conventional testing machine (Figure 48). The tensile strength of the agglomerate is defined as the tensile force P at failure divided by the cross section of the cylindrical specimen.

All methods for the determination of tensile strength described above are too complicated and time consuming to be suitable for routine industrial quality control applications. In those cases it is the task of the test procedure to determine a specific characteristic of the agglomerate easily, quickly, and reliably. The results must only be reproducible and comparable within the own organization and a relation to theoretical predictions is normally not required comparisons with results from other plants are often not necessary or, in case of competing products, not desired. 

BS2782, Methods 326A-C, 1983, Methods for testing plastics Determination of tensile strength and elongation of plastic films, British Standards Institute Publication, 1993. 

BS 4443. Method 3, Flexible cellular materials—Determination of tensile strength and elongation at break, 1988. 

EN 319 1993-08, Particleboards and fibreboards determination of tensile strength perpendicular to the plane of the board (1993). 

EN 205 (2003). Wood adhesives for non-structural applications — determination of tensile strength of lap joints. 

This consists of the production of six cylindrical specimens and testing their indirect tensile strength according to ASTM D 4867 (2009) or AASHTO T 283 (2011). The specimens are compacted to 7% voids. One set of three specimens is partially saturated using a vacuum chamber, followed by optional freeze/thaw conditioning cycle and 24 h heating at 60°C. Then, all specimens are tested for determination of tensile strength. 

Determination of tensile strength - Part 2 Constant elongation method ISO 1924-2 1994... 

EN ISO 10319 1996 Geotextiles - Wide-width Tensile Test or EN 29073-3 1992, Textiles - Test Methods for Nonwovens - Part 3 Determination of Tensile Strength and Elongation... 

Molnar K, Vas L M and Czigany T (2011) Determination of tensile strength of electrospun single nanofibers through modeling tensile behavior of the nanofibrous mat. Compos Part B (in press), doi 10.1016/j.compositesb.2011.04.024. 

Esterase Cladosporium cladosporioides Film, fibrs Determination of tensile strength, viscoelasticity, extension behavior, viscosity Hydrolysis, change of physical properties [93]... 

In most cases simple determination of tensile strength is not sufficient. Elongation at break and often full stress-strain behaviour analysis is required. Elongation of the sample must be measured. Many problems are associated with the accurate measurement of extension of polymers [11]. There is a wide range of extensions to be measured, from less than 1% for stiff materials like GP polystyrene to over 1000% for certain elastomer systems. There is a significant... 

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