Underwater laser texturing for enhanced adhesive joint bonding strength of Al-Mg alloy

Kumar, Nitish; Kumar, Shailesh; Prakash, Shashi

doi:10.1177/09544054221136529

Cited by 3 publications

(1 citation statement)

References 59 publications

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“…The adhesive joint bonding strength of various alloys must be thoroughly investigated. 119 An efficient machining control system is critical for machining. By learning from in-process sensor data, a product health monitoring system can be used to further forecast product quality.…”

Section: Future Prospectmentioning

confidence: 99%

A review on gas diffusion layer in proton exchange membrane fuel cell: Materials and manufacturing

Luo

Choo

Ahmad

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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A promising alternative to fossil fuel energy is the fuel cell technology. Proton exchange membrane (PEM) fuel cells are widely used in electric vehicle and mobile power generation fields. There are several components in the PEM fuel cell, namely the gas diffusion layer (GDL), PEM, catalyst layer (CL) and bipolar plate (BPP). The GDL is one of the key components of a PEM fuel cell and acts as a distributor of reagents, current conductor, water manager and a CL support. This paper presents an analysis of the materials and fabrication technologies of the GDL in the PEM fuel cell. A summary of the main materials for manufacturing the macroporous substrate (MPS) and microporous layer (MPL) of GDL was presented. Advanced manufacturing methods were described as single layer manufacturing, double layer manufacturing and multilayer manufacturing. A brief overview of the materials and manufacturing processes of BPP and CL were also presented. Future research directions have also been proposed.

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Section: Future Prospectmentioning

confidence: 99%

A review on gas diffusion layer in proton exchange membrane fuel cell: Materials and manufacturing

Luo

Choo

Ahmad

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Investigation of nanosecond laser micro-drilling of titanium under different processing environments

Mendiratta,

Prakash

2024

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this research work, the nanosecond fiber laser micro-drilling process on titanium was performed and investigated. Micro-drilling using the trepanning method is a preferred way to overcome hole taperness and create holes of desired dimensions. This study was focused on determining the effects of different processing environments on laser micro-drilled holes while keeping all other laser-related parameters constant. Experiments were performed to drill through holes of four different target diameters of 50, 100, 150, and 200 μm in the 0.5 mm thick titanium sheet. Scanning speed, laser power, pulse width, and pulse frequency of the laser were kept constant during the micro-drilling experiments. The number of passes was varied at three different levels viz, 50 passes, 75 passes, and 100 passes to determine the effect of the number of scans on hole dimensions and other output parameters. Experiments were performed under four different processing conditions, namely open air, under static water, under surfactant mix static water, and under flowing water conditions. Output hole diameter, heat affected zone, circularity, and taperness were measured for all the drilled holes. The mechanism of laser ablation under different processing conditions has been outlined. While the processing under flowing water conditions resulted in a minimum heat affected zone, processing with surfactant was observed to be delivering the drill hole diameter closest to the desired dimensions with the highest circularity and lowest taperness.

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Investigation of open air and under water laser surface texturing on surface roughness and wettability of Al-Mg alloy

Kaushik,

Prakash

2024

Proceedings of the Institution of Mechanical Engineers, Part L:

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Aluminum-Magnesium (Al-Mg) alloy is widely used in aerospace and marine related applications due to its high corrosion resistance, tensile strength and ductility properties. However, due to hydrophilic nature, its applications are restricted in areas where water absorption may cause problems like corrosion. In this research work, high speed laser texturing was carried out on Al-Mg alloy (AA5754) to improve hydrophobic properties of the material surface. Four different types of pattern, namely lines, grids, concentric circles and concentric rectangles were created on the material surface using a nanosecond fiber laser. Scanning speed was varied at two levels i.e., 500 mm/s and 1000 mm/s. Line density of texture designs was also varied at two levels of 10 lines per mm and 15 lines per mm. The texturing process was carried out in two different processing environment namely open air and in underwater condition. Distilled water with 1 mm thickness above the surface was used during underwater texturing condition. Surface morphology, surface roughness and wettability of all the surfaces were studied for all the experimental conditions. It was observed that lower scanning speed of 500 mm/s resulted in higher values of surface roughness and contact angles. Also, larger texture density leads to lower surface roughness and contact angles for all the pattern designs. Among all the studied texture patterns, grid structures, textured at 500 mm/s of scanning speed resulted in largest surface roughness and surface hydrophobicity.

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Underwater laser texturing for enhanced adhesive joint bonding strength of Al-Mg alloy

Cited by 3 publications

References 59 publications

A review on gas diffusion layer in proton exchange membrane fuel cell: Materials and manufacturing

A review on gas diffusion layer in proton exchange membrane fuel cell: Materials and manufacturing

Investigation of nanosecond laser micro-drilling of titanium under different processing environments

Investigation of open air and under water laser surface texturing on surface roughness and wettability of Al-Mg alloy

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