The automobile industry has started using adhesive bonding to join load bearing components which aerospace industry has been using for decades. Adhesive lap joints are used frequently in the manufacture of automobile. In present study, structural adhesives were used to join the aluminium alloy (AA5083 H111) with the HSS dual phase (DP780) steel. Adhesive bonding appears to be one of the appropriate methods of joining dissimilar materials. The aim of this work is to analyze the tensile strength of similar and dissimilar joints. The influence of various parameters was also investigated such as the overlap length and the bondline thickness of specimens. In DP steel, there is 22% increase in strength for similar lap joint when overlap length changes from 10 mm to 15 mm, while there is 45% increase in strength when it varies from 15 mm to 20 mm. Similarly in case of Al alloy, there is 26% increased strength for similar lap joints when length varies from 10 mm to 15 mm, while it increased to 42% when length changes from 15 mm to 25 mm and there is about 35% increase in strength for length varies from 20 mm to 25 mm. In case of dissimilar joints, firstly there is about 16% increase in strength then there is 5% decrease while after that there is 45% increase in strength. Adhesion failure, cohesion failure and mixed failure were obtained experimentally during failure mode analysis. As the strength of joint increases, failure mode shows a transition from adhesion failure to cohesion failure. From the literature survey it is evident that limited work has been carried out on analysis of shear-tensile strength of adhesively bonded steel and aluminium joint with variation in bonding parameters. Not much work on failure mode analysis of bonded joints during tensile testing has been reported. In present work a noval attempt has been made to analyze the shear-tensile strength and failure mode of adhesively bonded steel and aluminium joint with variation in bonding parameters.

汽车工业已经开始使用粘合剂来连接航空航天工业几十年来一直使用的承重部件。粘性搭接接头经常用于汽车制造。在本研究中，结构粘合剂用于将铝合金 (AA5083 H111) 与高速钢双相 (DP780) 钢连接起来。粘合剂粘合似乎是连接不同材料的合适方法之一。这项工作的目的是分析相似和不同接头的抗拉强度。还研究了各种参数的影响，例如试样的重叠长度和胶层厚度。在DP钢中，搭接长度从10mm变化到15mm时，类似搭接接头的强度增加了22%，而当搭接长度从15mm变化到20mm时，强度增加了45%。类似地，在铝合金的情况下，当长度从 10 mm 变化到 15 mm 时，类似搭接接头的强度增加了 26%，而当长度从 15 mm 变化到 25 mm 时，强度增加了 42%，并且增加了约 35%长度强度从 20 毫米到 25 毫米不等。在异种接头的情况下，首先强度增加约 16%，然后减少 5%，然后强度增加 45%。在失效模式分析期间通过实验获得粘附失效、内聚失效和混合失效。随着接头强度的增加，失效模式显示出从粘附失效到内聚失效的转变。从文献调查中可以明显看出，在结合参数变化的情况下，对粘合粘合的钢和铝接头的剪切拉伸强度进行分析的工作有限。在拉伸试验期间对粘合接头的失效模式分析的报道不多。在目前的工作中，已经进行了一项新的尝试，以分析粘合参数变化的钢铝接头的剪切拉伸强度和失效模式。