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Ultrasonic welding of Cork Wood/PLA composites: effect of welding factors on lap shear strength performance

Paniliyappan, Sabrinathan, Sivakumar, Narain Kumar, Rajakumar, S and Mohan, Dhanesh G (2024) Ultrasonic welding of Cork Wood/PLA composites: effect of welding factors on lap shear strength performance. Journal of Adhesion Science and Technology. pp. 1-20. ISSN 0169-4243

Item Type: Article


In this paper, the dissimilar joining of Poly Lactic Acid (PLA) with Cork Wood (CW) particles reinforced Poly Lactic Acid (CW/PLA) was made by using an Ultrasonic Welding (UW) process. The single lap joint was made to analyse the better joining with good adhesion between the neat polymer and Cork PLA polymer composite. The objective of this study is to formulate a good bonding of neat biodegradable polymeric material with Cork wood particles reinforced composite with concern to the UW factors like Ultrasonic Amplitude (UA), Welding Pressure (WP), and Welding Time (WT). The experimental trial was carried out by altering the levels of UW factors such as UA (25, 28 and 31 µm), WP (0.10, 0.15 and 0.20 MPa), and WT (1, 1.3 and 1.5 sec) with respect to attainment the higher lap shear strength. The statistical optimization methods, including Taguchi and Analysis of Variance, are employed to identify the optimum factors for the welding process and evaluate the proportional impact of the UW factors. The results revealed that the UA of 28 µm, WP of 0.15 MPa, and WT of 1.5 sec exhibits the higher lap shear strength of 24.16 MPa. For the optimized condition, the interface hardness was measured using the Shore D hardness method. The results imply that the maximum interface hardness of 75 was observed at the weld centre. Fractured samples clearly show that interfacial failure is absent, this dictates the weld regions are strong enough to hold the applied load. The developed regression model for the present UW process on the PLA and Cork wood PLA composite is significant and has an R2 value of 92.8%. So, the developed model is suitable for converting into large-scale industrial production and applications.

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More Information

Uncontrolled Keywords: Ultrasonics, welding, bio composite, hardness, optimisation
Depositing User: Dhanesh Mohan


Item ID: 17701
Identification Number:
ISSN: 0169-4243
Official URL:

Users with ORCIDS

ORCID for Sabrinathan Paniliyappan: ORCID iD
ORCID for Narain Kumar Sivakumar: ORCID iD
ORCID for S Rajakumar: ORCID iD
ORCID for Dhanesh G Mohan: ORCID iD

Catalogue record

Date Deposited: 21 Jun 2024 14:05
Last Modified: 21 Jun 2024 14:15


Author: Sabrinathan Paniliyappan ORCID iD
Author: Narain Kumar Sivakumar ORCID iD
Author: S Rajakumar ORCID iD
Author: Dhanesh G Mohan ORCID iD

University Divisions

Faculty of Technology > School of Engineering


Engineering > Mechanical Engineering

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