Testing:-
Tensile Strength:Main article: Tensile testing
Typically, the testing involves taking a small sample with a fixed cross-section area, and then pulling it with a controlled, gradually increasing force until the sample changes shape or breaks.
When testing metals, indentation hardness correlates linearly with tensile strength. This important relation permits economically important nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers.[4]
It should be noted that while most metal forms, like sheet, bar, tube and wire can exhibit the test UTS, fibers, such as carbon fibers, being only 2/10,000th of an inch in diameter, must be made into composites to create useful real-world forms. As the datasheet on T1000G below indicates, while the UTS of the fiber is very high at 6,370MPa, the UTS of a derived composite is 3,040MPa - less than half the strength of the fiber.[5]
Typically, the testing involves taking a small sample with a fixed cross-section area, and then pulling it with a controlled, gradually increasing force until the sample changes shape or breaks.
When testing metals, indentation hardness correlates linearly with tensile strength. This important relation permits economically important nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers.[4]
It should be noted that while most metal forms, like sheet, bar, tube and wire can exhibit the test UTS, fibers, such as carbon fibers, being only 2/10,000th of an inch in diameter, must be made into composites to create useful real-world forms. As the datasheet on T1000G below indicates, while the UTS of the fiber is very high at 6,370MPa, the UTS of a derived composite is 3,040MPa - less than half the strength of the fiber.[5]
TENSILE STRENGTH STRAIN & MODULUS:-
The purpose of this test is to give an indication of a material’s performance under load. The given load is defined as the stress and the amount of deformation is known as the strain. By knowing the amount of strain a designer can have some idea of how a particular product or component will perform under working conditions.
Tensile testing involves stretching a specimen and measuring the load carried. The load and deflection data are translated into a stress-strain curve from which a range of tensile properties can be extracted. This is short term data obtained over a limited time period and usually under ideal laboratory conditions. Due to the majority of plastic materials being sensitive to temperature, the likely working conditions for the product or component need to be borne in mind when studying performance data.
Tensile testing involves stretching a specimen and measuring the load carried. The load and deflection data are translated into a stress-strain curve from which a range of tensile properties can be extracted. This is short term data obtained over a limited time period and usually under ideal laboratory conditions. Due to the majority of plastic materials being sensitive to temperature, the likely working conditions for the product or component need to be borne in mind when studying performance data.