TY - JOUR
T1 - Revised adjusted factor for delamination measurement in drilling of composites
AU - Bhat, Ritesh
AU - Mohan, Nanjangud
AU - Sharma, Sathyashankara
N1 - Funding Information:
Nicolai Cramer received his PhD at the University of Stuttgart, Germany, in 2005 under the supervision of Prof. Sabine Laschat. As Feodor Lynen fellow of the Humboldt-Foundation, he undertook postdoctoral studies with Prof. Barry M. Trost at Stanford University (2006–07). From 2007–10, he worked on his habilitation at the chair of Prof. Erick M. Carreira at the ETH Zurich, Switzerland. Then he moved to the EPFL to his current position as Assistant Professor. His research interests include the development of novel and selective C–H and C–C bond activations modes. His work has been recognized by the Bayer Early Excellence in Science Award, the ORCHEM, and the ADUC habilitation prices of the German Chemical Society, the EUChems Young Chemist Gold Medal, and the Werner price of the Swiss Chemical Society.
Publisher Copyright:
© 2018-2022, Rangsit University.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Delamination, an inter-ply damage, is a major concern during the drilling of FRP composites. It is evident from past studies that the focus of the researchers has been mostly on reducing the delamination damages by optimising the input parameters, cutting parameters, tool geometry parameters and work materials properties, rather than improving the model for quantifying the delamination factor to get near-to right values. Though Davim’s adjusted model overcomes the demerits of mostly proposed models, it is believed to give the exaggerated values of the delamination factor. Thus, the present study proposes a revised basic two-dimensional model to quantify the delamination factor for fibre-reinforced polymer composites, while addressing the exaggeration effect caused by the most commonly used adjusted delamination factor model. The developed model in this work resulted from combining two prior stated models: Davim’s adjusted model and Da Silva's minimum delamination factor model. The proposed model is validated experimentally and reconfirmed with additional experiments concerning its applicability and efficacy. The delamination damage in this work is characterised by the peel up mechanism for the experimental validation purpose. The results indicate that the exaggeration effect is reduced by 13 to 15% in determining delamination factor value using the proposed model, compared to the existing two-dimensional adjusted factor model.
AB - Delamination, an inter-ply damage, is a major concern during the drilling of FRP composites. It is evident from past studies that the focus of the researchers has been mostly on reducing the delamination damages by optimising the input parameters, cutting parameters, tool geometry parameters and work materials properties, rather than improving the model for quantifying the delamination factor to get near-to right values. Though Davim’s adjusted model overcomes the demerits of mostly proposed models, it is believed to give the exaggerated values of the delamination factor. Thus, the present study proposes a revised basic two-dimensional model to quantify the delamination factor for fibre-reinforced polymer composites, while addressing the exaggeration effect caused by the most commonly used adjusted delamination factor model. The developed model in this work resulted from combining two prior stated models: Davim’s adjusted model and Da Silva's minimum delamination factor model. The proposed model is validated experimentally and reconfirmed with additional experiments concerning its applicability and efficacy. The delamination damage in this work is characterised by the peel up mechanism for the experimental validation purpose. The results indicate that the exaggeration effect is reduced by 13 to 15% in determining delamination factor value using the proposed model, compared to the existing two-dimensional adjusted factor model.
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M3 - Article
AN - SCOPUS:85123623412
SN - 2630-0583
VL - 12
SP - 32
EP - 42
JO - Journal of Current Science and Technology
JF - Journal of Current Science and Technology
IS - 1
ER -