Multivariate analysis of high through-put adhesively bonded single lap joints

The goal of this research was to experimentally demonstrate the correlations between processing variables (adhesive type, bondline thickness, adherend thickness, surface pretreatment, overflow fillet) and effective strength in adhesively bonded single lap joints. While generalizations between effect...

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Bibliographic Details
Published in:International journal of adhesion and adhesives 2019-03, Vol.89, p.1-10
Main Authors: Jensen, Robert E., DeSchepper, Daniel C., Flanagan, David P.
Format: Article
Language:English
Subjects:
Adherend thickness
Adhesive
Adhesive bonding
Adhesive joints
Adhesive strength
Bond strength
Bonded joints
Bonding strength
Bondline thickness
Design parameters
Lap joints
Multivariate analysis
Pretreatment
Principal component analysis
Principal components analysis
Relational data bases
Relational database
Single lap joint
Surface pretreatment
Thickness
Workflow
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Summary:The goal of this research was to experimentally demonstrate the correlations between processing variables (adhesive type, bondline thickness, adherend thickness, surface pretreatment, overflow fillet) and effective strength in adhesively bonded single lap joints. While generalizations between effective strength and individual joint design parameters have been assumed for decades, the multifaceted interplay between parameters is complex and remains difficult to understand. Traditionally reported studies of the adhesive bond strength of single lap joints are often limited in the sample size populations needed to statistically probe concurrent design variables. To overcome sample size limitations a test matrix of 1200 single lap joints, partitioned by 96 unique fabrication conditions, was processed and tested using a workflow protocol orchestrated through a relational database. The enhanced pedigree and integrity enabled by using a relational database centered workflow allowed for multivariate principal component analysis of the joint design parameters, with all experimental data input available for peer audit. The results of this study revealed that the adhesive type biases the remaining joint configuration variables towards more influence with respect to either mechanical load or displacement to failure.
ISSN:0143-7496
1879-0127
DOI:10.1016/j.ijadhadh.2018.11.004