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ASTM D638-01 -Standard Testing Instruments
ASTM D638 provides the specification method for taking tensile tests for unreinforced and reinforced plastics. The tests are carried out under controlled environmental conditions, with a controlled temperature, humidity, and crosshead speed, with dumbbell specimens. Presto Stanatest's Universal Testing Machines are engineered to deliver the precise crosshead speed control and extensometer compatibility that ASTM D638-compliant testing demands.
The standard test method ASTM D638 -01 explains the tensile properties of breakable and unbreakable plastics. The plastics are firstly cut in the standard form of dumbbell shape and then tested under defined conditions like humidity, temperature, testing machine speed, the thickness of the specimen, etc. The standard explains the size of the sample. The thickness of the test specimen can be 0.55 inches or 14mm.Therefore, the test specimens in the form of fragile sheets or plastic films with the thickness less than 0.04 inches or 1.0mm, ASTM D638-01 is the best standard test method.
Significance
ASTM D638 is important because it evaluates the critical properties of materials such as tenacity, yield, elongation, modulus of elasticity, and more. The values are necessary for the selection of the suitable material in the automotive industry, packaging, construction, or consumer goods industry. The correct tensile values have a direct affect on all three aspects of manufacturing, including product safety and reliability of performance.
Scope
ASTM D638 can be used for plastic materials up to a thickness of 14 mm. For this reason, ASTM D882 is normally chosen as the more appropriate testing standard when the material being tested is less than 1.0 mm in thickness. The method calls for testing systems that can maintain precise crosshead speed control and support full extensometer integration for accurate measurement. It is widely used for evaluating both reinforced and non-reinforced plastic materials used in many industrial and commercial sectors.
Tensile Testing Machine Digital
It is highly recommended for evaluating the tensile strength of products and materials. The equipment is based on the Constant Rate of Traverse (CRT) principle. It is equipped with an upper jaw and a lower jaw. Universal Tensile Testing Machine is a reliable piece of equipment which is widely used for checking tensile strength of a product/sample. One of the most common mechanical testing techniques used to determine tensile strength, this is a method wherein controlled tension is applied to a sample until it fully fails.
Thus, the material properties of the sample can be easily determined by this test. It involves measuring the force required to elongate a sample under test to breaking point. Using this test, manufacturers and quality managers are able to determine the core strength of their products.
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Tensile Testing Machine Digital Cum Computerised Win Test Model
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UTM Machine – zeus ultimo 3
Presto Stantest Universal Testing Machine (UTM) is a load-testing instrument that pulls or pushes a sample to measure its strength. The word "universal" is there for a reason — the same machine handles tension, compression, bending, peeling and shear, depending on the grip and fixture you fit to it.
Most people use it for tensile tests, where a specimen is gripped at both ends and slowly pulled apart. The force needed to break the sample tells you its strength, and the amount it stretches before breaking tells you about its flexibility. That is why the equipment is also known as a Universal Tensile Tester or a Universal tensile strength tester — the tensile test is its most common job.
In short, if you want one honest answer to "how strong is this material?", a tensile testing machine of this kind is the tool that gives it.
