Material methods of material and specimen preparation specimen conditioning test environment speed of testing void content and volume percent reinforcement.
Dog bone material testing.
A dog bone or dumbbell specimen is used to tensile test plastic materials per astm d638.
4 2 this test method is designed to produce tensile property data for quality control and research and development.
This test is a destructive method in which a specimen of a standard shape and dimensions prepared according to astm d 638tandard test method for tensile properties of.
Tensile testing also known as tension testing is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure.
Consider for example the flat dog bone shaped specimen that s commonly used for tension testing fig.
Flat dog bone specimens can also be die cut from a plastic sheet or machined from a block.
The test method can be used for testing materials up to 14mm 0 55 in and the material should be in the shape of a dumbbell or dog bone.
Dog bone shaped dts test specimens used for different brittle materials such as concretes cements and ceramics were investigated to be also used in rock material testing in this study.
The plastic dog bones are typically molded in a die to produce test specimens depending on the specific requirements of the applicable tensile testing standards.
Report all factors that influence the tensile properties such as.
S plastics is subjected to an axial load.
If a material is thicker than 14mm then it must be reduced.
If all of the sample materials had the same shape it s easier for us to compare the properties of the different materials.
In a tensile test the sample material is lathed into the shape of a dog bone for comparing the results of other materials.
From these measurements the following properties can also be determined.
The cutting method is used to create samples from flexible material as it is easier to push the cutter through them without cracking the sample due to their ductile nature.
As shown in figure 6 1ng a typical tensile duri experiment a dog bone shaped specimen is gripped at.
A tensile test is a standardized test used for finding the properties for a specific material.
Properties that are directly measured via a tensile test are ultimate tensile strength breaking strength maximum elongation and reduction in area.
