Instruments as per ASTM D1776
Standard Test Method for Conditioning and Testing Textiles
The standard test method covers the conditioning and testing of textiles in those instances where such conditioning is mentioned in a test method. Because former exposure of textiles to low or high humidity may affect the balanced moisture pick-up, a test method also is provided for preconditioning the material when specified. The equipments to be used in the conditioning and testing of textiles must include conditioning chamber, preconditioning cabinet, Psychrometer ventilated by aspiration and multiple shelf containing rack or suitable container.
The conditioning chamber consists of instrument for maintaining the standard atmosphere for testing textiles throughout the chamber within the tolerances, including the facilities for circulating air over all surfaces of the exposed specimen for recording the relative humidity and temperature of the air in the conditioning chamber. For commencing the test procedure, test specimens are brought in contact with moisture for testing as per the standard atmosphere for testing textile.
Tearing is a common property of failure of many materials like rubber, textile and paper. We also know that materials differ in their ability to tearing, some materials are quite resistant to tearing in nature when they are in their full form, but at the same time when small cut is made......