T/CNGA 36-2022 The method for testing the pressure-bearing performance of wearing elastic fabric
T/CNGA 36-2022 The method for testing the pressure-bearing performance of wearing elastic fabric
Basic Information
Scope
Scope: This document specifies two methods for testing the compression performance of elastic fabrics on the human body. This document is applicable to elastic fabrics. Main technical content: 3. Terms and definitions The following terms and definitions are applicable to this document. 3.1 Compression performance of the fabric on the human body The compression performance of the fabric on the human body when the fabric comes into contact with the human body and deforms. 3.2 Stopping strength The tensile force (or top pressure) of the fabric when it is stretched (or pressed) to a fixed elongation is called stopping strength. 3.3 Relaxation strength The tensile force (or top pressure) of the fabric after it is stretched (or pressed) to a fixed elongation and held for a predetermined time is called relaxation strength. 4. Principle Human activities and dynamic contact with clothing generate clothing pressure. The elongation of the fabric will produce a vertical force acting on the human body, causing compression at the point of action, and subsequently generating clothing pressure. The extensibility of the fabric is an important factor affecting the compression performance of clothing, and the applied force and duration are the main objective reasons for the fabric's compression sensation on the human body. This document uses a three-dimensional dynamic pressure simulation test method with a fixed top pressure depth or a CRE (constant rate elongation tester) test method to test the extensibility of the fabric, and characterizes the compression performance of elastic fabrics on the human body by testing the stopping strength and relaxation strength. 5. Instruments and tools 5.1 Method A - Three-dimensional dynamic pressure simulation test method 5.2 Method B - CRE (constant rate elongation tester) test method