Invited Speaker

Prof. Huang Shu

Jiangsu University

E-mail: huangshu@ujs.edu.cn

Title: Key Technologies for Laser Surface Modification and Life Extension of Metal Components in Complex Service Environments

Profile:

Focusing on laser intelligent manufacturing technology and equipment integration, a series of characteristic works have been carried out. The speaker has been awarded as high-level talents in Jiangsu Province, leading talents in Changzhou City, "Excellent Science and Technology Worker" of the Special Processing Branch of the Chinese Mechanical Engineering Society, and "Excellent Science and Technology Worker" of Zhenjiang City. The speaker is currently a youth committee member of the Special Processing Branch of the Chinese Society of Mechanical Engineering and an editorial board member of several well-known journals in the industry. The speaker has won the second prize of Jiangsu Science and Technology, the second prize of Ministry of Education Technology Invention, the first prize of China Heat Treatment Industry Technology Progress, the second prize of China Industry University Research Cooperation Innovation Achievement, and the second prize of China Business Federation Science and Technology Award. Hosted over 10 national and provincial-level scientific research projects, published 1 academic monograph, published over 80 SCI/EI indexed papers as the first/corresponding author, authorized 6 US invention patents, and authorized 23 national invention patents.

Abstract: 

Key components of aviation and marine engineering equipment face severe challenges such as fatigue damage, strength mismatch, and hydrogen induced fracture in extreme service environments such as high temperature, heavy load, and marine corrosion. Aiming at different material systems, usage environments, and failure modes, innovative methods of warm laser peening and new processes of ultrasonic laser composite shock processing strengthening have been proposed. These methods have overcome technical challenges such as controllable loading of shock wave pressure, stable stress/tissue strengthening effects, matching of strength and toughness properties, and uniform processing of complex structures. Original basic theory, engineering technology, and complete set of equipment for multi energy field composite laser peening for life extension have been formed, achieving high-temperature fatigue life extension and strength toughness matching of metal components, greatly improving the service life of aviation equipment. At the same time, the application of laser peening technology in hydrogen rich marine environments, has revealed the mechanism of hydrogen permeation and diffusion in the surface of ultra-high strain rate plastic deformation suppression materials, elucidated the stress/tissue synergistic anti hydrogen induced cracking and life extension mechanism, and effectively improved the service performance of key components of marine engineering equipment.