Kiyotaka MASAKI

National Institute of Technology Okinawa College

Papers

Total Citations

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About

Kiyotaka Masaki is a leading researcher in the field of laser-based surface modification and mechanical engineering, with a primary focus on improving the fatigue properties and residual stress states of metallic alloys. His most cited work, "Effects of Laser Peening with a Pulse Energy of 1.7 mJ on the Residual Stress and Fatigue Properties of A7075 Aluminum Alloy" (2021, 14 citations), demonstrates a breakthrough in laser peening without coating (LPwC). By employing a palmtop-sized Q-switched Nd:YAG microchip laser—emitting 1.3 ns pulses at a 1.06 μm wavelength—Masaki successfully induced beneficial compressive residual stresses in A7075 aluminum alloy, significantly enhancing its fatigue life. This compact, low-energy approach represents a major contribution to portable, cost-effective surface treatment technologies, making advanced peening accessible for aerospace and automotive applications. His work bridges the gap between high-power industrial lasers and practical, field-deployable systems, offering a scalable solution for improving component durability. Masaki’s research is highly regarded for its precision and real-world impact, with his citation record reflecting growing interest in microchip laser peening as a transformative tool for materials engineering.