What is Creep Test? Creep test is a material mechanical property test that measures the slow plastic deformation phenomenon of metal materials under long-term constant temperature and constant stress. The higher the temperature or stress, the more significant the creep phenomenon. Creep can occur under a single stress (tension, compression, or torsion) or under composite […]
Industry Standard – Metals – ISO 204 – Creep Test Read More »
ASTM D3410 is a test standard for determining the in-plane compressive properties of high-modulus fiber-reinforced polymer matrix composites. This test method is designed to generate compressive performance data for CFRP (carbon fiber reinforced polymer), primarily used in the aerospace industry for material specification, research and development, quality assurance, and structural design and analysis. Test Fixture
Industry Standard – Composites – ASTM D3410 Read More »
ASTM D6641 is currently the most widely used test method for compressive properties of composite materials in industry. This method can measure the compressive strength and stiffness of polymer-based composite materials. Compared to other methods, its application of extrusion and shear forces on the perpendicular surface has less impact on compressive strength, resulting in a
Industry Standard – Composites – ASTM D6641 Read More »
Upholding Professional Integrity · Deeply Engaged in Testing Excellence Recently, CMTEST Testing Co., Ltd. (referred to as “CMTEST Testing”), a subsidiary of Sinotest Equipment Co., Ltd., has successfully completed its overall relocation and officially settled in its new base at 1118 Guigu Street, Changchun City. This relocation is not only an important milestone in the
Unite for Growth · Strive for Dreams | CMTEST Testing New Base Inaugurated Read More »
Influence of Frame Structure on Frame Stiffness: The Case Study of Rock Triaxial Testing Machines In the first two articles of this series, we shared the basic concepts, importance and common measurement methods of testing machine stiffness. As mentioned in the first article, the stiffness of the testing machine frame has the most significant impact on
Uncovering the Core Stiffness Performance of Testing Machines Read More »
ASTM D648 for Deflection Temperature of Plastics The heat deflection temperature (HDT) describes the temperature at which a plastic material starts to deform under a predetermined load. This value is used in materials testing to evaluate the thermal resistance of a material. It is measured by subjecting a defined specimen to an increasing temperature under constant load
Industry Standard – Plastics – ASTM D648 Read More »
ASTM D3574 Standard Test Methods for Flexible Cellular Materials—Slab, Bonded, and Molded Urethane Foams ASTMD 3574 apply to slab, bonded, and molded flexible cellular products known as urethane foams. Urethane foam may be generally defined as an expanded cellular product produced by the interaction of active hydrogen compounds, water, and isocyanates. Summary of Test methods
Industry Standard – Plastics – ASTM D3574 Read More »
ASTM D1894 coefficient of friction plastic films and sheeting This test method covers determination of the coefficients of starting and sliding friction of plastic film and sheeting when sliding over itself or other substances at specified test conditions. The procedure permits the use of a stationary sled with a moving plane,or a moving sled with a stationary plane. Both procedures yield the same coefficients of friction values for a given sample.
Industry Standard – Plastics – ASTM D1894 Read More »
ASTM D882 Standard Test Method for Tensile Properties of Thin Plastic Sheeting ASTM D882 is a standard test method for determining the tensile properties of thin plastic films with a thickness of less than 1.0 mm (0.04 in) and is of great importance in the film packaging industry, both for quality control and research and development. Note 1—Film
Industry Standard – Plastics – ASTM D882 Read More »
Industry Standard – Plastics – ASTM D412 The ASTM D412 standard defines procedures used to evaluate the tensile (tension) properties of vulcanized thermoset rubber and thermoplastic elastomers. The methods appear as follows: Test Method A—Dumbbell and Straight Section Specimens; Test Method B-Cut Ring Specimens. (These two different methods do not produce identical results.) The values stated in
Industry Standard – Plastics – ASTM D412 Read More »
English 
Spanish 
Russian