车门密封条拉伸质量评价数据

在动夹持器或滑轮恒速移动的拉力试验机上，将哑铃状标准试样进行拉伸。按要求记录试样在不断拉伸过程中和当其断裂时所需的力和伸长率的值，根据公式变形量÷标准基线的宽度×100%=应变（%）、力值÷（厚度×宽度）=应力（MPa）进行计算得出拉伸强度、、断裂伸长率等性能结果。将算出的性能结果与国家标准或客户技术要求进行对比判断，确定该样品拉伸性能是否合格，用于作出是否需要改进生产工艺、生产配方和该产品是否符合客户要求的判定依据。1、样品采集：根据GB/T 528-2009的技术要求取I型哑铃状试样，用测厚仪和游标卡尺分别测出待测样条的厚度和宽度，并画出两条间隔25mm±0.5mm的标准基线； 2、样品测试：将试样对称地夹在拉力试验机的上、下夹持器上，使拉力均匀地分布在待测样条的横截面上，拉伸速度设置为500±50mm/min，点击触控面板上的"开始"按钮进行测试 ； 3．数据采集：每组样品测试完成之后导出变形量（mm）和力值（N）；4、数据计算：变形量÷标准基线的宽度×100%=应变（%）；力值÷（厚度×宽度）=应力（MPa）；5、根据该样品的技术要求，最大的应力最大值≥7MPa，且应变最大值≥150%即记为合格品，任一参数不满足技术要求即记为不合格品，用于作出是否需要改进生产工艺或生产配方的判定依据。Tensile tests are performed on dumbbell-shaped standard specimens using a tensile testing machine with constant-speed moving grips or pulleys. The force and elongation values required during continuous stretching and at specimen fracture are recorded as specified. Tensile strength, elongation at break and other performance results are calculated via the following formulas: Strain (%) = (Deformation / Standard Gauge Length) × 100%, Stress (MPa) = Force / (Thickness × Width). The calculated performance results are compared against national standards or customer technical requirements to evaluate whether the tensile properties of the sample are qualified, which serves as the basis for determining whether production processes or formulations need to be improved and whether the product meets customer requirements. 1. Sample Collection: Prepare Type I dumbbell-shaped specimens in accordance with the technical requirements of Chinese National Standard GB/T 528-2009. Measure the thickness and width of the test bar using a thickness gauge and vernier caliper respectively, and draw two reference lines with a spacing of 25mm ± 0.5mm. 2. Sample Testing: Symmetrically clamp the specimen to the upper and lower grips of the tensile testing machine to ensure uniform distribution of tensile force across the cross-section of the test bar. Set the tensile speed to 500 ± 50 mm/min, then click the "Start" button on the touch panel to conduct the test. 3. Data Collection: Export the deformation (mm) and force (N) values after completing the test for each sample set. 4. Data Calculation: Strain (%) = (Deformation / Standard Gauge Length) × 100%; Stress (MPa) = Force / (Thickness × Width); 5. Judgment Criterion: According to the technical requirements of the sample, the specimen is classified as a qualified product if its maximum stress value is ≥7 MPa and its maximum strain value is ≥150%. If either parameter fails to meet the technical requirements, it is classified as a non-qualified product. This serves as the basis for determining whether production processes or formulations need to be improved.

搜集汇总

数据集介绍

特点

该数据集为车门密封条拉伸质量评价数据，包含323条记录，每月更新，用于通过拉伸测试评估样品的合格性，并已存证于区块链平台。