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Short-period creep testing method for sofa cushion and equivalence thereof

A test method and short-cycle technology, applied in the field of effectiveness, can solve the problems of unfavorable sofa production enterprises or professional testing institutions for testing and evaluation, uncontrollable testing environment, low testing efficiency, etc., achieving good equivalence, simple operation, The effect of high experimental efficiency

Inactive Publication Date: 2018-12-07
SHANDONG YIHUA FURNITURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This test method for sofa cushion load fatigue performance has defects such as long test period, low test efficiency, and uncontrollable test environment, which is not conducive to the test and evaluation of sofa manufacturers or professional testing institutions.

Method used

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  • Short-period creep testing method for sofa cushion and equivalence thereof
  • Short-period creep testing method for sofa cushion and equivalence thereof
  • Short-period creep testing method for sofa cushion and equivalence thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Place a three-layer sponge cushion with a size of 500×500×250mm in the heating mechanical test device, place counterweights of the same weight on the upper pressure steel plate on the left and right, and place weights, double-layer pressure steel plates and wooden loading pads. The total counterweight is 2000N, and the levelness of the double-layer pressure steel plate is adjusted to keep it in a horizontal state. Close the door of the heating mechanics testing device, and set the maximum heating temperature to 60°C; turn on the power to make the heater heat up, and the heating rate is controlled at 1.5°C / min. When the temperature reaches 60°C, keep the constant temperature for 1 hour. Turn off the power, open the door of the heating mechanics testing device, remove the counterweight, take the sofa cushion out of the heating mechanics testing device, place it at room temperature for 2 hours, measure the thickness of the sofa cushion, and calculate the thickness of the so...

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Abstract

The invention relates to a short-period creep testing method for a sofa cushion, wherein the method comprises the following steps: allowing a wooden bionic loading cushion to completely fall on the upper surface of the sofa cushion with the original thickness of h0 by pressurizing a double-layer steel plate, placing a counter weight on an upper-layer steel plate, heating a whole testing system, and keeping the temperature constant for 1 h after the temperature reaches the highest temperature; and taking out the sofa cushion, placing for 2-3 h at room temperature, measuring the thickness h1 ofthe sofa cushion, to obtain the compressive creep value of the sofa cushion: [delta]h=h0-h1, and predicting the long-term creep behavior at normal temperature and pressure level according to the equivalence. The method has the advantages: 1) the long-term creep behavior at normal temperature and normal pressure level is predicted equivalently by a short-period creep behavior at high temperature and pressure level, the creep performance, fatigue strength and the like of the sofa cushion are effectively predicted by short-period test, and a good guarantee is provided for the mechanical properties of the sofa cushion; and 2) the experimental device is concise, the operation is simple, the experimental efficiency is high and the equivalence is good.

Description

technical field [0001] The invention relates to a short-period creep test method for a sofa cushion and its equivalent, belonging to the technical field of furniture production test. Background technique [0002] At present, the method of static load fatigue performance testing of sofa cushions is mainly to apply loads to the cushions at room temperature to make them repeatedly bear the pressure of 500-1000N, and the test cycle usually takes 1-2 months. After the test, measure and calculate the compression creep of the cushion to judge the fatigue resistance of the sponge cushion. This method for testing the load fatigue performance of sofa cushions has defects such as long test period, low detection efficiency, and uncontrollable test environment, which is not conducive to the test and evaluation of sofa manufacturers or professional testing institutions. Contents of the invention [0003] The present invention proposes a short-period creep test method for sofa cushions ...

Claims

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Application Information

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IPC IPC(8): G01N3/28G01N3/34
CPCG01N3/28G01N3/34G01N2203/0033G01N2203/0071G01N2203/0226
Inventor 刘壮超潘敬毓黄泽群林美莲黄琼涛卓才成
Owner SHANDONG YIHUA FURNITURE CO LTD
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