Practical application of smash and breakaway press-working to engineering ceramic plates

Research Project

Project/Area Number	04650053
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	Aerospace engineering
Research Institution	KYOTO UNIVERSITY
Principal Investigator	NOJIMA Taketoshi Kyoto Univ.Aeronautical Eng., Instructor, 工学部, 助手 (40026258)
Co-Investigator(Kenkyū-buntansha)	SUGIYAMA Fumiko Kyoto Univ.Aeronautical Eng., Techunical Official, 工学部, 教務職員 (80162907) 小川欽也京都大学, 工学部, 助手 (00026220)
Project Period (FY)	1992 – 1993
Project Status	Completed (Fiscal Year 1993)
Budget Amount *help	¥2,100,000 (Direct Cost: ¥2,100,000) Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000) Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywords	Ceramics / Glasses / Brittle materials / Press-working / Formation of holes / Breakaway cutting / Plates / 穴明け
Research Abstract	The purpose of the present research is to establish a simple method of forming holes in brittle sheet materials by a conventional punching operation and also to develop a new press working technique with the use of cracking (breakaway cutting) aided by thermal stress. The obtained results are sumarized as (1) by utilizing specially designed round-top punch, the formation of holes was quite successful in engineering ceramicplates and (2) by using the mechano-thermal press-working, a linear, a curved and a circular cutting techniques were developed for engineering ceramics. In some glasses, Dumbbell-type specimens were formed by the press-working.