Skin/textile biologic friction dynamic measurement device

Abstract

The invention relates to a skin / textile biologic friction dynamic measurement device, which comprises a measurement base, wherein a vertical seat is fixed at the rear part of the measurement base; a first sliding way and a second sliding way are installed at the front part of the measurement base; the first sliding way is installed on a movable panel of the second sliding way; a measurement panel is also installed on the first sliding way; an installation panel which can move up and down is arranged at the front side of the vertical seat; a measurement contact is fixed on the installation panel and is positioned above the measurement panel; a multi-axial force / torque transducer is installed between the measurement contact and the installation panel; the multi-axial force / torque transducer is connected with a data processing system of a personal computer through a power supply box; the first sliding way can make the measurement panel move left and right; the second sliding way can make the movable panel move back and forth; and the installation panel can move up and down. The device not only can measure the frictional force, pressure and torque functions during the contact sliding process in real time, but also can truly reflect the skin / textile multidirectional contact friction movement process under different sliding speeds and initial pressures.

Description

technical field [0001] The invention relates to the field of testing the friction performance of textile fabrics in the technical field of textile measurement, in particular to a dynamic measurement device for biological friction of skin textiles based on a multi-axis force three-dimensional synchronous motion platform. Background technique [0002] In daily life, textiles are the closest contact partners of human beings. During the contact process between human skin and textiles, there will be friction, torsion (caused by the relative rotation of the fabric and the skin) or relative movement tendency, which has the characteristics of inescapable. The contact friction between the two occurs anytime and anywhere, and varies with the external environment and contact state, such as wet friction, thermal friction, curved surface friction, pinch friction, torsional friction, etc. To a certain extent, the contact friction between skin / textile has a decisive effect on the contact ...

AI Technical Summary

Problems solved by technology

A relatively mature and commercialized test system is the KES-FB4 surface performance tester [Kawabata, 1996] of the fabric style tester series developed by the Japanese scholar Kawabata. The change curve of the friction coefficient on the displacement is obtained by the relative sliding between the probe and the fabric surface, and a constant pressure (50CN) is given during the test, ignoring the dynamics of the contact pressure changing with the difficulty of sliding, and the one-dimensional sensor used cannot Simultaneously record the real-time changes of the normal and tangential force of the contact interface between the two; at the same time, the Chinese patent (patent publication number: CN102175600A, publication date: 2011.09.07) "A device and method for detecting friction between fabric and skin" Provides a device and method for detecting friction between fabric and skin based on a two-dimensional pressure sensor. Although the proposed device can accurately detect the dry and wet friction performance between fabric / skin under constant pretension, the It is impossible to test the contact force or pressure change caused by the unevenness of the fabric surface and the resulting stick-slip phenomenon, nor can it test the friction and torsion effect formed when the fabric-skin moves relative to each other in any direction; in addition, the Chinese patent (patent Publication No.: CN 2805698Y, Publication Date: 2005.8.16) "Special Test Device for Skin Friction Characteristics", using replaceable test materials (such as prosthetic socket materials, textile materials, labor sports materials) contacts and human or animal skin Move back and forth between the body and the body, and test the friction force and friction coefficient under different forces and speeds in real time through the three-dimensional force sensor, but this device can only measure the friction motion under the reciprocating movement between the skin and the textile material, and cannot Covers multi-directional (one-way, reciprocating and rotating) friction motions when human skin is in contact with fabrics, and cannot perform friction and friction torsion tests under various contact and motion modes

In summary, it is not difficult to see that the existing test devices based on the contact friction between skin and textiles cannot reflect the friction phenomenon when the skin and textiles are in contact and slide, whether it is the friction force in any direction of motion, or the torsional friction

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