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Your location: Home > Related Articles > Experimental Principle of Manual Tear Resistance Tester

Experimental Principle of Manual Tear Resistance Tester

Author:QINSUN Released in:2023-08 Click:99

The manual tear strength tester is a test equipment independently developed and produced by qisnun Precision Electromechanical Technology Co., Ltd. , It can also be used for the bursting strength test of silk, cotton fabric, paper, cardboard and single-layer and multi-layer corrugated cardboard.

Complies with standards:

GB3917.1, FZ/T6006-1991, FZ/T75001-1993-1999, ASTMD1424-96, ASTMD5734-96

Experimental principle:

When the single seam method is torn, a constrained triangle is formed at the tear in the fabric. When the tensioned weft yarns of the sample are gradually separated from top to bottom, the warp yarns that are not directly under tension begin to slip relative to the tensioned weft yarns and gradually come together to form a triangular area approximate. At the bottom of the tear opening,the warp yarns in the stressed triangle are under tension together, and the warp yarn near the bottom of the triangle bears the greatest force, and the force on the other warp yarns gradually weakens according to a certain load gradient.

Due to the frictional resistance between the threads, slippage is limited. When sliding, the chain tension increases rapidly and the strain elongation also increases sharply. When the first warp yarn constituting the base of the stressed triangle is stretched to break the elongation, this warp yarn breaks, and the stressed state of the second warp yarn is immediately transformed into the state before the breaking of the warp yarn. front warp, thus repeated, the warp yarn yarn one The roots are continuously broken one by one, forming a fracture surface like a knife cut. It can be seen that when the simple sewing method is torn, the broken thread is the system thread without tension andthe direction of the tensile force is perpendicular to the original axis of the broken wire. 64,000 mN weight, also with heavy duty sample cutters.

Shanghai Fanbiao Textile Testing Technology Co., Ltd., as a company R&D, manufacturing, sales, training and service, is committed to continuously providing more testing instruments to the market, providing long-term textile, non-standard customization is also acceptable for testing instruments for leather, combustion, automotive interior materials, environmental climate aging, masks, etc. Before purchase, we can carry out targeted tests according to customer requirements to ensure that the purchased instruments are suitable.