한국표준정보망

회원가입 로그인 비회원(주문조회) 장바구니0 이용안내

English

메뉴

한국표준정보망전체메뉴

세계 주요 표준,
빠르고 편리하게!

ENGLISH

검색 마이페이지 장바구니0

QUICK

닫기

TOP

해외표준 상세정보

관심표준 등록 : 표준업데이트 시 알림서비스

제공형태 더보기

구판

판매

ASTM C1421-15

Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature
- 발행일 : 2015-07-01
- 발행기관 : ASTM
즐겨찾기 장바구니 담기

상품이 장바구니에 담겼습니다.
장바구니로 이동
- [영어]PDF 188,600원
- [영어]PRINT 188,600원

상세정보

분야

15.01 : 내화물; 활성카본; 세라믹

적용범위

1.1 These test methods cover the fracture toughness, K_Ic, determination of advanced ceramics at ambient temperature. The methods determine K_Ipb (precracked beam test specimen), K_Isc (surface crack in flexure), and K_Ivb (chevron-notched beam test specimen). The fracture toughness values are determined using beam test specimens with a sharp crack. The crack is either a straight-through crack formed via bridge flexure (pb), or a semi-elliptical surface crack formed via Knoop indentation (sc), or it is formed and propagated in a chevron notch (vb), as shown in Fig. 1.

Note 1: The figures on the right show the test specimen cross sections and crack types. Four-point loading may be used with all three methods. Three-point may be used with the pb and vb specimens.

Note 1: The terms bend(ing) and flexure are synonymous in these test methods.

1.2 These test methods are applicable to materials with either flat or with rising R-curves. Differences in test procedure and analysis may cause the values from each test method to be different. For many materials, such as the silicon nitride Standard Reference Material 2100, the three methods give identical results at room temperature in ambient air.

1.3 The fracture toughness values for a material can be functions of environment, test rate and temperature. These test methods give fracture toughness values for specific conditions of environment, test rate and temperature.

1.4 These test methods are intended primarily for use with advanced ceramics that are macroscopically homogeneous and microstructurally dense. Certain whisker- or particle-reinforced ceramics may also meet the macroscopic behavior assumptions. Single crystals may also be tested.

1.5 This standard begins with a main body that provides information on fracture toughness testing in general. It is followed by annexes and appendices with specific information for the particular test methods.

Main Body	Section
Scope	1
Referenced Documents	2
Terminology (including definitions, orientation and symbols)	3
Summary of Test Methods	4
Significance and Use	5
Interferences	6
Apparatus	7
Test Specimen Configurations, Dimensions and Preparations	8
General Procedures	9
Report (including reporting tables)	10
Precision and Bias	11
Keywords	12
Summary of Changes
Annexes
Test Fixture Geometries	Annex A1
Procedures and Special Requirements for Precracked Beam Method	Annex A2
Procedures and Special Requirements for Surface Crack in Flexure Method	Annex A3
Procedures and Special Requirements for Chevron Notch Flexure Method	Annex A4
Appendices
Precrack Characterization, Surface Crack in Flexure Method	Appendix X1
Complications in Interpreting Surface Crack in Flexure Precracks	Appendix X2
Alternative Precracking Procedure, Surface Crack in Flexure Method	Appendix X3
Chamfer Correction Factors, Surface Crack in Flexure Method Only	Appendix X4
Crack Orientation	Appendix X5

1.6 Values expressed in these test methods are in accordance with the International System of Units (SI) and Practice IEEE/ASTM SI 10.

1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

국제분류(ICS)코드

페이지수

Edition

이력정보

No.	표준번호	표준명	발행일	상태
1	ASTM C1421-18(2025)상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2025-01-01	표준
2	ASTM C1421-18상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2018-01-01	구판
3	ASTM C1421-18 REDLINE상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2018-01-01	구판
4	ASTM C1421-16상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2016-01-01	구판
5	ASTM C1421-15상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2015-07-01	구판
6	ASTM C1421-10상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2010-12-01	구판
7	ASTM C1421-09상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2009-05-01	구판
8	ASTM C1421-01b(2007)상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2007-02-01	구판
9	ASTM C1421-99상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperatures	2001-10-10	구판
10	ASTM C1421-01b상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature	2001-10-10	구판
11	ASTM C1421-01a상세보기	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperatures	2001-10-10	구판