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首页> 外文期刊>Sodagem & inspecao >An??lise das Causas de Varia?§?￡o Atribu?-das a Diferentes Instrumentos Metrol?3gicos para Verifica?§?￡o das Caracter?-sticas Geom??tricas de um Processo de Soldagem por Pontos
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An??lise das Causas de Varia?§?￡o Atribu?-das a Diferentes Instrumentos Metrol?3gicos para Verifica?§?￡o das Caracter?-sticas Geom??tricas de um Processo de Soldagem por Pontos

机译：分析变化属性的原因-给予不同的计量仪器以验证点焊过程的几何特性

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In this study, we sought to analyze the variability of instruments used in industry to evaluate the geometric characteristics of a welding point. For this purpose, the design of experiments technique was used to generate a fractional factorial design for the welding parameter configurations in test specimens of hot dip galvanized steels in order to represent the real amplitude of the resistance spot welding process. For the analyzes, the repeatability and reproducibility (GR&R) study was used by the analysis of variance method to identify the variation components of the measurement system by evaluating three different instruments, comparing the measurements performed by an image analyzer, from the metallography and measurements of conventional metrology instruments such as the dial-gauge and the caliper. Two quality characteristics were evaluated: indentation depth and nugget width. From the results it was possible to verify that the image analyzer presented a lower variability in the measurements, being the best choice for the measurements of the quality responses of the spot welding process, presenting a GR&R classified as acceptable.
机译：在这项研究中，我们试图分析用于评估焊接点几何特性的工业仪器的可变性。为此，实验技术的设计被用于生成热浸镀锌钢试样中焊接参数配置的分数阶乘设计，以表示电阻点焊过程的真实幅度。对于分析，通过方差分析法使用可重复性和再现性（GR＆R）研究，通过评估三种不同的仪器，比较图像分析仪的测量结果，从金相学和金相测量结果中确定测量系统的变化成分。传统的计量仪器，例如千分表和卡尺。评价了两个质量特征：压痕深度和熔核宽度。从结果可以证实，图像分析仪在测量中表现出较低的变异性，是点焊过程质量响应测量的最佳选择，并且GR＆R被列为可接受。

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