The effects of adhesive thickness, surface roughness and overlap distance on joint strength in prismatic plug-in joints attached with adhesive

2012 ◽  
Vol 7 (17) ◽  
Author(s):  
Sinan AYDIN
Keyword(s):  
Surface Roughness ◽  
Joint Strength ◽  
Adhesive Thickness

Influence of surface roughness, friction coefficient, and wrap angle on clinching joint strength and its correlation with belt friction phenomenon

2021 ◽  
pp. 135065012110253
Author(s):  
Santosh Kumar ◽  
Vimal Edachery ◽  
Swamybabu Velpula ◽  
Avinash Govindaraju ◽  
Sounak K. Choudhury ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Friction Coefficient ◽  
Joint Strength ◽  
Joint Interface ◽  
Cross Sectional ◽  
Lap Shear ◽  
Mathematical Correlation ◽  
Mechanical Clinching ◽  
Wrap Angle

Clinching is an economical sheet joining technique that does not require any consumables. Besides, after its usage, the joints can be recycled without much difficulty, making clinching one of the most sustainable and eco-friendly manufacturing processes and a topic of high research potential. In this work, the influence of surface roughness on the load-bearing capacity (strength) of joints made by the mechanical clinching method in cross-tensile and lap-shear configuration is explored. Additionally, a correlating mathematical model is established between the joint strength and its surface parameters, namely, friction coefficient and wrap angle, based on the belt friction phenomenon. This correlation also explains the generally observed higher strength in lap-shear configuration compared to cross-tensile in clinching joints. From the mathematical correlation, through friction by increasing the average surface roughness, it is possible to increase the strength of the joint. The quality of the thus produced joint is analyzed by cross-sectional examination and comparison with simulation results. Experimentally, it is shown that an increment of >50% in the joint strength is achieved in lap-shear configuration by modifying the surface roughness and increasing the friction coefficient at the joint interface. Further, the same surface modification does not significantly affect the strength in cross-tensile configuration.

Reliability Factors in Ceramic/Metal Joining

1993 ◽  
Vol 314 ◽  
Author(s):  
Katsuaki Suganuma
Keyword(s):  
Surface Roughness ◽  
Joint Strength ◽  
Applied Pressure ◽  
Great Influence ◽  
Thermal Expansion Mismatch ◽  
Large Scatter ◽  
Absolute Value ◽  
Solid State Joining ◽  
Joining Process ◽  
Processing Factors

AbstractThis paper reviews the processing factors in joining ceramics to metals concerning the reliability. Thermal expansion mismatch has a great influence not only on the absolute value of strength but also on the reliability of joints. Large thermal stress increases the scatter of joint strength because of the presence of defects induced during joining process. One should insert an appropriate interlayer to relax the stress between a ceramic and a metal. Surface roughness also has some influence on the reliability. A roughly ground bond face leads large scatter in strength. Scratches must be removed before joining. Unjoined area reduces joint strength especially in solid-state joining. In brazing, the homogeneity in the braze layer should be also controlled carefully. A slight applied pressure during brazing can preserve the integrity of joints.

The Effect of Adhesive Thickness on Joint Strength

1969 ◽  
Vol 1 (1) ◽  
pp. 48-53 ◽  
Author(s):  
W. A. Dukes ◽  
R. W. Bryant
Keyword(s):  
Joint Strength ◽  
Adhesive Thickness

Twist Compression Welding of Aluminum

2019 ◽  
Author(s):  
T. Yokota ◽  
T. Hashimoto ◽  
M. Otsuka ◽  
M. Nobutoki ◽  
T. Ueki
Keyword(s):  
Surface Roughness ◽  
Oxide Film ◽  
Film Thickness ◽  
Joint Strength ◽  
Twist Angle ◽  
Diffusion Welding ◽  
Surface Films ◽  
Metallic Materials ◽  
The Stability ◽  
Welding Pressure

Diffusion welding of metallic materials requires contact of clean surfaces by removing surface films. However, there is microscopic unevenness on the surfaces and they are covered with oxide layers, absorbed gas layers, contaminating substance layers, etc. Welding is prevented by this unevenness and by these surface films and it is the stability of the surface films, in particular, which affects welding. Aluminium is regarded as a particularly difficult material for diffusion welding since it has a highly stable strong oxide film. Hence, to weld aluminium, it is necessary to remove this stable film so that welding can be performed. This article describes will describe the result of the investigation into the effect of twist angle, welding pressure and temperature, film thickness and surface roughness on the joint strength of the material.

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