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湲덉냽 �옱猷뚯쓽 �씤�옣 �떆�뿕
Tensile Test of Metallic Materials
Department of Mechanical Engineering, Andong National University
Key Words: �빆蹂듦컯�룄(Yield strength), �씤�옣媛뺣룄(Tensile Strength), �뿰�떊�쑉(Elongation), �꽕�궧(Necking)
Abstract: �씤�옣�떆�뿕��� �옱猷뚭컯�룄�뿉 愿��븳 湲곗큹�쟻�씤 �옄猷뚮�� �뼸�쓣 紐⑹쟻�쑝濡� �닔�뻾�릺�뒗 怨듭뾽�떆�뿕 以묒뿉�꽌 媛��옣 湲곕낯�쟻�씤 �떆�뿕�쑝濡�, 蹂댄넻 �솚遊됱씠�굹 �뙋 �벑�뿉 �씤�옣�븯以묒쓣 媛��빐 �븯以묎낵 蹂��삎�쓣 痢≪젙�븳�떎. 蹂댄넻 �씠濡쒕���꽣 痢≪젙�븷 �닔 �엳�뒗 媛믪�� �옱猷뚮쭏�떎 �떎瑜대ʼn, �씤�옣媛뺣룄, �빆蹂듭젏, �떒硫댁닔異뺣쪧, �뿰�떊�쑉 �벑�쓣 二쇰줈 援ы븯寃� �맂�떎. �삉�븳 洹� �쇅�뿉 �씤�옣�떆�뿕 �뿉 �쓽�빐 痢≪젙�맆 �닔 �엳�뒗 �옱猷뚯쓽 湲곌퀎�쟻 �꽦吏덈줈�꽌�뒗 鍮꾨���븳�룄, �깂�꽦�븳�룄, �깂�꽦怨꾩닔 �벑�씠 �엳�떎.
1. Introduction
怨듭뾽�슜�옱猷뚯쓽 湲곌퀎�쟻 �꽦吏덇낵 諛섎��濡� �옟�븘�떦湲곕뒗 �옒�쓽 ����빆�꽦�쓣 �븣湲곗쐞�븳 �떎�뿕�쑝濡� �씠瑜� �넻�빐 怨듭뾽�슜�옱猷뚯쓽 蹂��삎怨쇱젙 諛� �쓳�젰蹂��솕瑜� 議곗궗�븯�뿬 �떎�뼇�븳 臾쇰━�쟻 �듅�꽦(�깂�꽦怨꾩닔, �빆蹂듦컯�룄, �씤�옣媛뺣룄, 鍮꾨���븳�룄, �뿰�떊�쑉 �벑)�쓣 議곗궗�븯�뒗 寃껋씠 紐⑹쟻�씠�떎.
2. Theoretical Background
�뼳 �쓳�젰-蹂��삎瑜� �꽑�룄
�쓳�젰-蹂��삎瑜� �꽑�룄(Stress-Strain Diagram)�뒗 �븯以묎낵 蹂��쐞�쓽 愿�怨꾨�� �굹����궡�뒗 �븯以� 蹂��쐞�꽑�룄(Load Elongation Diagram)�씠�떎. �븯以�(P)�쓣 �썝�옒�쓽 硫댁쟻(A節� )�쑝濡�, �몴�젏嫄곕━�쓽 蹂��솕�웾�쓣 �몴�젏嫄곕━(L節� )濡� �굹�늿 媛믪쓣 怨듯븰 �쓳�젰-蹂��삎瑜� �꽑�룄(Engineering Stress-Strain Diagram)瑜� �뼸�뼱�궪 �닔 �엳�떎.
�쓳�젰(��)= 蹂��삎瑜�(琯)=
Fig. 1 Stress-Strain Diagram [1]
Fig. 2 0.2% Offset Method [2]
�뼳 �깂�꽦怨꾩닔���(�깮�왂)
3. Materials and Specimens
4. Experimental Procedure
1)踰꾨땲�뼱 罹섎━�띁�뒪瑜� �궗�슜�븯�뿬 吏곴꼍怨� �떒硫댁쟻�쓣 怨꾩궛�븳�떎.
2)�씤�옣�떆�뿕�쓣 �쐞�빐 �떆�렪�쓣 �꽕移섑븳�떎. �꽕移� �쟾, �뼇履� �걹遺�遺꾩뿉 �삊媛숈�� 湲몄씠濡� �꽕移섑빐�빞�븳�떎.
3)�씤�옣 �떆�뿕�뿉 �븘�슂�븳 �슂�냼�뱾�쓣 �쁺�젏 議곗젅�븳�떎.
4)�꽌�꽌�엳 �븯以묒쓣 媛��븳�떎.
5)�뙆�떒�맂 �떆�렪�쓣 �젣嫄고븯怨�, �떆�렪 �뙆�떒遺��쓽 吏곴꼍�쓣 援ы븳�떎.
6)�떆�뿕�뜲�씠�꽣瑜� �씠�슜�븯�뿬 �븘�슂�븳 媛믪쓣 怨꾩궛�븳�떎.
5. Result
6. Conclusions
(1) http://blog.naver.com/gokhd1007
(2) http://blog.naver.com/gokhd1007
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s-strain curve
Fig. 7 0.2% offset
Table 2 Results of tensile tests
Young`s Modulus
Yield Strength
(0.2 offset)
Tensile Strength
Elongation
3.462GPa
85.10MPa
329MPa
11.34963%
6. Conclusions
�씠踰� �떎�뿕�쓣 �넻�빐 �깮�냼�븯寃� �뱾由щ뜕 �슜�뼱�뱾�씠 議곌툑�뵫 洹��뿉 �뱾�뼱�삤怨� �씠�빐�븯湲� �떆�옉�븳 寃� 媛숇떎. �씤�옣 �떎�뿕��� 怨듭뾽�슜 �옱猷뚯쓽 臾쇰━�쟻, 湲곌퀎�쟻 �듅�꽦�쓣 �븣寃� �빐二쇰뒗 湲곕낯�쟻�씠硫댁꽌�룄 以묒슂�븳 �떎�뿕�씠硫�, �씠 �떎�뿕�뿉�꽌�쓽 媛� �뱾��� 湲곌퀎�꽕怨�, �젣�옉 �벑�뿉 怨좊젮�릺�뼱�빞�븷 以묒슂�븳 媛믪씠�떎. �뿭�떆 泥섏쓬 �빐蹂� 嫄곕씪 �떊湲고븯怨� �옱誘몄엳�뿀�떎. �떎留� �븘�돩�슫 �젏�씠�씪硫�, 吏곸젒 �빐蹂댁�� 紐삵빐 �븘�돩�슫 寃껉낵 �뜲�씠�꽣 媛믪쓽 �삤李⑤씪怨� �깮媛곷맂�떎.
李멸퀬臾명뿄
(1) http://blog.naver.com/gokhd1007
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(2) http://blog.naver.com/gokhd1007
Redirect=Log&logNo=11xxxxxxxxxxx (洹몃┝2)
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