Effect of Surface Roughness on the Adhesive Strength of the Heat-Resistant Adhesive RTV88

Cho, Tae Min; Choo, Yeon Seok; Lee, Min Jung; Oh, Hyeon Cheol; Lee, Byung Chai; Park, Tae Hak; Shin, Young Sug

doi:10.1163/016942409x12508517390671

Cited by 16 publications

(6 citation statements)

References 8 publications

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“…Generally, engineers usually prefer to design single lap joints during manufacturing of automobiles and it is essential to know the lap shearing strength of adhesively bonded joints in the scope of a larger surface roughness. Several reports pointed out that there exists a most suitable surface roughness for the raw materials which bring about maximum tensile strength of the adhesively bonded aluminum joints [7][8][9][10]. Tezcan studied the influence of surface roughness on the adhesively bonded joints strength under impact loading with different strain rates.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surface Roughening of the Raw Material on the Lap Shearing Strength and Failure Behavior of Adhesively Bonded Aluminum Joints

Liu

Wang

Yan

et al. 2022

Preprint

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Surface roughening of the substrates before bonding plays a significant effect on improving the mechanical performance of the adhesively bonded joints, which are prevalently used for light-weighting vehicle bodies. In this study, the influence of surface roughening on the lap shearing strength and failure behavior of adhesively bonded aluminum sheet joints was investigated. Sandpaper grinding was employed for surface roughening, methods such as tensile testing microstructure observation, etc., was employed for evaluating the performance of the joints. The results showed that the lap shearing strength of adhesively bonded joints increased and then decreased with the surface roughness of the aluminum substrate. The maximum shearing strength of the joint bonded with grinded substrates was 30.4 MPa which was improved by 57.5% compared to that produced with un-grinded substrates. However, over roughening is harmful. When the surface roughness was too large, the failure mode of the joint turned from the mixed failure mode to interfacial failure mode, which decreased the strength of the joints. Related mechanisms were demonstrated. When the substrate surface was coarsened, the bonding area and the wettability of the adhesive on the surface were both increased, which promoted the beneficial mechanical interlock effect between the adhesive and the substrate. However, when the substrate surface was over roughened, defects such as voids, insufficient infiltrating of the adhesive, etc., were induced, which apparently increased the proportion of the interfacial failure area.

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Section: Introductionmentioning

confidence: 99%

Influence of Surface Roughening of the Raw Material on the Lap Shearing Strength and Failure Behavior of Adhesively Bonded Aluminum Joints

Liu

Wang

Yan

et al. 2022

Preprint

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“…Essentially, in the scientific community, in terms of surface topography investigation, the adhesive problems can be classified into two categories: (i)-weak adhesion or van der Waals adhesion [16,17], and (ii)-strong adhesion or adhesion including intermediate layer [18]. Cho et al [18] studied the Aluminum adherend roughness effect on the strength of RTV88 adhesive strength through tensile-shear tests. They introduced effective area, peel failure area, and cohesive failure area to explain the surface roughness effect on adhesive strength.…”

Section: Introductionmentioning

confidence: 99%

Mechanical characterization and failure modes in the peeling of adhesively bonded strips from a plastic substrate

Zarei

Marulli

Paggi

et al. 2020

Mechanics of Advanced Materials and Structures

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With the aim of understanding failure modes in the peeling of silicone-based adhesive joints and, in particular, the occurrence of adhesive or cohesive failure, an experimental campaign has been conducted by considering plastic substrates with different surface roughness. A flexible strip has been bonded onto such substrates using a silicone adhesive, by controlling its thickness. Peeling tests with 90º and 180º peeling angle configurations have been performed and the effect of joint parameters, such as surface roughness and adhesive thickness, onto the adhesion energy and the failure mode are herein discussed in detail. Experimental results show that the failure mode varies in each peeling test configuration such that in the case of 180º peeling test there is mainly cohesive failure, while for 90º peeling angle, a combination of adhesive and cohesive failure occurs. Moreover, due to the presence of different failure modes in each peeling configuration, the substrate roughness can increase the adhesion energy only in 90º peeling tests.

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“…Several researchers studied the modification of fiber reinforced polymer (FRP) composite surfaces for adhesive bonding by means of abrasion, peel‐ply , grit blasting , plasma treatments and acid chemical etching . Most commonly employed mechanical methods such as abrading and blasting processes have major disadvantages such as fiber fracture, fiber matrix delamination and requirement of a secondary cleaning operation.…”

Section: Introductionmentioning

confidence: 99%

Laser surface treatment of CFRP composites for a better adhesive bonding owing to the mechanical interlocking mechanism

et al. 2019

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Adhesion can be greatly improved by the correct surface preparation techniques. One of the most common and useful technique is specific surface structuring which leads to mechanical interlocking and greater adhesion. This work describes the effect of laser-induced line pattern surface structuring on the mechanical interlocking mechanism and so on the adhesive bonding of carbon fiber reinforced polymer (CFRP) composites. Surface patterns with different laser scribes were obtained by CO 2 laser treatment. The effect of the number of a laser shot, the scribe depth, the number of the scribe and the angle between the direction of the laser scribes and mechanical test direction on the adhesive bonding strength of CFRP/CFRP joints was investigated by performing the single lap shear tests according to the ASTM D5868-01. After destructive tests, damaged surfaces were analyzed for determining the failure mechanisms. Mechanical tests showed that laser scribe characteristics especially the number of laser shot and the number of scribes have significant effects on the mechanical interlocking mechanism and so on the adhesion bonding strength. It is suggested that in order to improve the adhesion strength of CFRP/CFRP joints, mechanical interlocking mechanism shall be obtained by optimized laser scribe patterns. POLYM. COMPOS., 40:3611-3622, 2019.

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Effect of Surface Roughness on the Adhesive Strength of the Heat-Resistant Adhesive RTV88

Cited by 16 publications

References 8 publications

Influence of Surface Roughening of the Raw Material on the Lap Shearing Strength and Failure Behavior of Adhesively Bonded Aluminum Joints

Influence of Surface Roughening of the Raw Material on the Lap Shearing Strength and Failure Behavior of Adhesively Bonded Aluminum Joints

Mechanical characterization and failure modes in the peeling of adhesively bonded strips from a plastic substrate

Laser surface treatment of CFRP composites for a better adhesive bonding owing to the mechanical interlocking mechanism

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