Laboratories
Manufacturing Design and Mechanics

Process Mechanics Area (Mochizuki Laboratory)

Lifestyle improvement depends on how living spaces are created and used. Future needs in society include maximum utilization of spaces above and below the earth’s surface including the ocean (e.g., supertall skyscrapers, very deep underground structures, very large offshore structures, etc.), novel transportation systems (e.g., superfast aircrafts, super high-speed rails, environment-adaptive automobiles, etc.), and more environment-friendly energy. This requires the development of novel structures and manufacturing methods. Such structures and their associated functions must be tough. The toughness of massive structures depends not only on the structural design and materials but also the manufacturing process, especially how materials are joined. Our goal is to create novel structures. Thus, we study the potential of materials to realize innovative structures, the optimization of product structures from a manufacturing perspective, and development of materials to maximize their potential in the product structures. The two keywords in our research are joints and process mechanics.

Professor:
Masahito Mochizuki

Associate Professor :
Shigetaka Okano

Associate Professor :
Yoshiki Mikami

Research Topics
  • Microscopic mechanical modeling of the deformation, strength, and fracture characteristics of high-performance steel and welded joints
  • Relation between multiple thermal cycles of welding and structural strength and ductility
  • Simulation of softening of mismatched joints and evaluation of their strength
  • Development of a welding process analysis method that factors in the phase transformation and its application to welding deformation control
  • Measurement of weld material deformations and evaluations by simplified analysis
  • Real-time measurement and analysis of welding deformation and in-process control
  • Evaluation of work hardening of welded joints in piping systems and the residual-stress distribution characteristics
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