생몰정보
소속
직위
직업
활동분야
주기
서지
국회도서관 서비스 이용에 대한 안내를 해드립니다.
검색결과 (전체 1건)
원문 있는 자료 (1) 열기
원문 아이콘이 없는 경우 국회도서관 방문 시 책자로 이용 가능
목차보기더보기
title page
Contents
Abstract 5
Chapter I. Introduction 13
Chapter II. Literature surey 16
II-1. Welding type and method 16
II-2. Test method 18
II-2-1. Mini-sized specimen test 18
II-2-2. Small punch test 19
Chapter III. Experimental 21
III-1. Welding materials and procedure 21
III-2. Microstructure observation 22
III-3. Tensile and micro-hardness test 23
III-4. Fracture toughness test 24
III-5. Small punch test 25
IlI-6. Finite element analysis (FEA) on the small punch test 28
Chapter IV. Results and discussion 30
IV-1 Microstrctural characterstics 30
IV-2. Handness variation across dissimilar metal welds 31
IV-3. Tensile property variations 32
IV-4. Tensile properties evaluated from mini-sized specimens 33
IV-5. Fracture toughness variations 34
IV-6. Fracuture surface observation 36
IV-7. Correlation for tensile and fracture toughness evaluation using small punch test 38
IV-8. Finite element analysis simulation 41
Chapter V. Conclusions 43
Summary 46
References 48
Acknowledgement 84
Curriculum Vitae 85
Table III-1. Chemical compositions of the base matterials and welding wires 53
Table III-2. welding parameters for dissimilar metal weld 55
Table IV-1. Mean tensile properties in different part of the dissimilar metal welds measures by round bar tensile specimens at (a) room temperature, (b) 320℃ 68
Table IV-2. Mean tensile properties in different part of the dissimilar metal welds measures by mini-sized tensile specimens at (a) room temperature, (b) 320℃ 72
Table IV-3. Fracture toughness properties variation across the inconel 82/182 welds at (a) room temperature, (b) 320℃ 74
Table IV-4. Correlation constant for evaluating tensile property 77
Table IV-5. Equivalent fracture strain variation across the inconel weld at room temperature 77
Table IV-6. Equivalent fracture strain from experimental measurement and finite element analysis 81
Figure III-1. Schematics of the dissimilar metal weld of single V-grooved design 54
Figure III-2. Round bar specimen and mini-sized specimen for tensile test 56
Figure III-3. Location where the tensile specimens were taken from the finished dissimilar welds 57
Figure III-4. Fracture test specimens and the orientation of the specimens 58
Figure III-5. Schematics of the small punch system and spcimens for small punch test 59
Figure III-6. Typical SP load-deflection curves of TP316 with the definition of SP properties 60
Figure III-7. Schematic diagram of finite elements used in this simulation study for SP loading system 61
Figure IV-1. Cross-sectional view of the finished dissimilar weld 62
Figure IV-2. Typical cross section of dissimilar metal weld with details of microstructure 63
Figure IV-3. Micro-hardness variation across dissimilar metal welds (a) top, (b) middle, (c) bottom 64
Figure IV-4. Microstructure of SA508 Gr.3 (a) HAZ region, (b) base part 65
Figure IV-5. Microstructure of TP316 (a) HAZ region, (b) base part 66
Figure IV-6. Result of round bar tensile test at room temperature (a) SA508 Gr.3, (b) Welds, (c) TP316, and at 320℃ (d) SA508 Gr.3, (e) Welds, (f) TP316 67
Figure IV-7. Tensile properties variation across dissimilar metal welds using round bar specimens at (a) room temperature, (b) 320℃ 69
Figure IV-8. Microstructure of inconel 82/182 fusion zone (a) top, (b) middle, (c) bottom 70
Figure IV-9. Tensile properties variation across dissimilar metal welds using mini-sized tensile specimens at (a) room temperature, (b) 320℃ 71
Figure IV-10. Fracture toughness properties variation across the inconel 82/182 welds at (a) room temprature, (b) 320℃ 73
Figure IV-11. Fracture surface morphology for inconel 82/182 welds tested at room temprature 75
Figure IV-12. Fracture surface morphology for inconel 82/182 welds tested at 320℃ 76
Figure IV-13. Tensile properties variation across dissimilar metal welds using SP spcimens at room temperature 78
Figure IV-14. Experimental and simulation results of SP load-deflection curves as a function of friction coefficient applied between ball and sheet (a) SA508 Gr.3 (b) inconel weld (c) TP3I6 79
Figure IV-15. Experimental and simulation results of SP load-deflection curves (a) top (b) middle (c) botom 80
Figure IV-16. Detailed fracture toughness variation using tensile property and FEA at room temperature 82
Figure IV-17. Detailed fracture toughness variation using tensile property and FEA at 320℃ 83
원문구축 및 2018년 이후 자료는 524호에서 직접 열람하십시요.
도서위치안내: / 서가번호:
우편복사 목록담기를 완료하였습니다.
* 표시는 필수사항 입니다.
* 주의: 국회도서관 이용자 모두에게 공유서재로 서비스 됩니다.
저장 되었습니다.
로그인을 하시려면 아이디와 비밀번호를 입력해주세요. 모바일 간편 열람증으로 입실한 경우 회원가입을 해야합니다.
공용 PC이므로 한번 더 로그인 해 주시기 바랍니다.
아이디 또는 비밀번호를 확인해주세요
