A study on the machinability behaviour of Al6061-ZnO&lt;SUB align="right"&gt;(p) metal matrix composite through wire-cut electro discharge machining using multi objective optimisation on the basis of ratio analysis

Sadhasivam, R.M. Sakthi; Ramanathan, K.; Sargunanathan, S.; Manikandan, M.

doi:10.1504/ijcaet.2021.117141

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“…Mechanical, chemical, physical and thermal properties were optimised using AHP and 'multi-objective optimisation based on ratio analysis' (MOORA) (Maharana et al, 2020). MOORA technique was used to determine the process parameters like pulse on time, voltage and wire feed rate, metal removal rate and surface roughness for aluminium (A6061) reinforced zinc oxide particle metal matrix (Sadhasivam et al, 2021). Alternative approach of response surface method of experimental design was also used for optimisation (Gangwar et al, 2021;Patil, 2017).…”

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confidence: 99%

Investigation and optimisation of cracked aluminium alloy plate restored for fatigue loading application

Tamboli

Pandey

Patil

2022

IJCAET

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Crack propagation could be catastrophic, and it needs the urgent attention of the user. A cracked structure needs to be repaired or replaced at the earliest. Costs associated with the complete replacement of the part paves the way for the former option, especially in the aircraft industry. Composite materials have good directional properties in the strength and toughness compared to the conventional materials like metals, alloys and plastics. In this study carbon fibre reinforced polymer (CFRP) has been used to repair the inclined crack in aluminium alloy plate having 1.6 mm thickness. Repaired aluminium alloy specimens were subjected to fatigue load to investigate the effectiveness of CFRP. By using the ply drop technique, the strength of the damaged structure has been restored. Various options have been evaluated by conducting the design of experiment. A peeling off tendency of the CFRP patch was observed during the study. To suppress this peeling off tendency, interfacial shear stress between CFRP and the aluminium was studied more intensely rather than the fracture toughness parameters. To select the optimum configuration MCDM optimisation techniques were used and numerical solutions were validated by lab experiments.

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