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題名 | 光彈方法在銲接機械性質量測之研究=Study on the Mechanical Properties of Weldment by Using Photoelastic Method |
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作者 | 張嘉隆; 李睿中; Chang, C. L.; Lee, R. C.; |
期刊 | 銲接與切割 |
出版日期 | 19980300 |
卷期 | 8:2 1998.03[民87.03] |
頁次 | 頁56-69 |
分類號 | 472.14 |
語文 | chi |
關鍵詞 | 光彈方法; 銲接; 機械性質; 量測; |
中文摘要 | 本研究是應用光彈方法觀察銲接接合件承受靜態單軸向拉力時,全場應變分佈現 象。藉由光彈變化現象,探討銲材、熱影響區及母材在彈塑性區的應變變化行為,並探討殘 留應力對各位置降伏強度的影響程度。從觀察到的現象,可以很容易的判斷出銲接的破斷模 式。本研究實驗的銲接方式採用遮護性氣體金屬電弧銲,並將實驗分成兩組,一組為 E6010 和 ASTM A515 鋼材,另一組為 E7016 和 SS41 鋼材。本文在機械降伏強度的差異上做不同 組合,目的是藉由光彈方法,觀察不同強度的組合其應變的變化現象。銲接件的破壞方式及 位置,可由光彈條紋所判讀的主應力方向及最大條紋密度預測。將銲接後的光彈結果與未銲 接的原母材的光彈結果做比較,可以得到銲接殘留應力及銲接治金對母材機械強度的影響程 度,比盲孔法更能顯現出殘留應力對整體銲件的影響程度。 |
英文摘要 | The purpose of this research is to study the strain distribution of the weldment under a uniaxially static tension load by the photoelastic method. The shield gas metal arc weld was used in this research. Two types of materials, different combinations of weld metal and base metal, are studied. The models were cut from the weldment, perpendicularly to the weld joint. The elastic-plastic behavior of the weld metal, heat affected zone, and base metal can be observed by the fringe pattern of the photoelastic coating. The effects of residual stress on the variation of yielding strength at different locations are also studied. Compared the fringe patterns in models of weldment and plain base metal, the influence of the residual stress on the weldment can be detected.The failure manner of the weldment can be predicted by the principal stress direction on the coating and the location of the densest fringe orders. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。