JPS57120840A - Test piece for destructive testing - Google Patents
Test piece for destructive testingInfo
- Publication number
- JPS57120840A JPS57120840A JP645581A JP645581A JPS57120840A JP S57120840 A JPS57120840 A JP S57120840A JP 645581 A JP645581 A JP 645581A JP 645581 A JP645581 A JP 645581A JP S57120840 A JPS57120840 A JP S57120840A
- Authority
- JP
- Japan
- Prior art keywords
- test piece
- opening
- cracking
- axis direction
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
PURPOSE:To make the stopping of the progression of a cracking during the course thereof possible in destructive testing by opening a through-hole of a circular shape in the central part of a rectangular test piece, providing a sharp notch on the extension of the diameter in the long side direction of said hole, and applying compressive load in the long side direction. CONSTITUTION:A rectangular test piece of which the length L in the y-axis direction is 2-5 times the width W in the x-axis direction is made and an opening 2 of a circular shape is penetrated in the central part. The diameter 2R of the opening 2 is set at 5-50mm., and the width W of the test piece at 2-15 times the 2R. In the end part of the diameter of the opening 2 in its y-axis direction, a sharp notch 3 of <=0.1mm. the radius of the leading end and the length about 0.2 times the 2R is worked on the y-axis. When compressive load sigma is loaded in the y-axis direction of this test piece, a cracking 5 is generated in the leading end part of the notch 3 and develops. At this time, the relations among the sigma, the cracking length (a), the coefft. K of stress expansion and the radius R are as shown in the figure, and if the a/R exceeds about 0.2, the K decreases with an increase in the (a). Hence, when constant load is applied, the progression speed of the cracking decreases gradually and stops on the way.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP645581A JPS57120840A (en) | 1981-01-21 | 1981-01-21 | Test piece for destructive testing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP645581A JPS57120840A (en) | 1981-01-21 | 1981-01-21 | Test piece for destructive testing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57120840A true JPS57120840A (en) | 1982-07-28 |
Family
ID=11638900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP645581A Pending JPS57120840A (en) | 1981-01-21 | 1981-01-21 | Test piece for destructive testing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57120840A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015530570A (en) * | 2012-09-04 | 2015-10-15 | スネクマ | A method for determining the non-propagation threshold of fatigue cracks at high frequencies. |
CN110031328A (en) * | 2019-04-23 | 2019-07-19 | 湖北汽车工业学院 | A kind of in-situ compression sample for high-temperature laser Laser Scanning Confocal Microscope |
-
1981
- 1981-01-21 JP JP645581A patent/JPS57120840A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015530570A (en) * | 2012-09-04 | 2015-10-15 | スネクマ | A method for determining the non-propagation threshold of fatigue cracks at high frequencies. |
CN110031328A (en) * | 2019-04-23 | 2019-07-19 | 湖北汽车工业学院 | A kind of in-situ compression sample for high-temperature laser Laser Scanning Confocal Microscope |
CN110031328B (en) * | 2019-04-23 | 2023-11-28 | 湖北广奥减振器制造有限公司 | In-situ compression sample for high-temperature laser confocal microscope |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE31772T1 (en) | METHODS AND DEVICES FOR LUBRICATION OF TENSIONS. | |
NO844200L (en) | PROCEDURE FOR AA APPLYING A THINER TO A PLATE OR SHELTER | |
JPS57120840A (en) | Test piece for destructive testing | |
JPS52140380A (en) | Durability testing method for initial overload | |
ATE20272T1 (en) | PUNCH ANCHOR. | |
MY101439A (en) | Expansion sleeve and anchorage device incorporating the sleeve. | |
Vogt | Comparative Survey of Types of Load and Specimen Shapes in Connection with Stress Corrosion Cracking Test | |
ES224954U (en) | Blind nut with a resilient split tapere cage | |
GB2106210A (en) | Attachment device and method to apply it | |
GB887605A (en) | Improvements in and relating to stressed concrete structures | |
SU532782A1 (en) | Method of testing materials in a flat stress state | |
JPS5680525A (en) | Device for fixing ceramic rotor | |
BASTENAIRE | The random character of results of fatigue tests and its processing for the requirements of the engineer | |
JPS542795A (en) | One end hardening testing device | |
ATE30621T1 (en) | SPLIT. | |
SU947694A1 (en) | Specimen for testing materials for strength | |
GB1483750A (en) | Self-sizing cushioning device for a hydraulic jack | |
JPS53143804A (en) | Engine test turn table | |
TOPUNOV et al. | Development and experimental evaluation of a numerical method for solving the inverse axisymmetric problem in an axial turbine stage with given velocity | |
JPS5335980A (en) | Accelerated deterioration test device of communication cable and its connection part | |
SU587273A1 (en) | Device for connecting components | |
Noback | State of the art and statistical aspects of helicopter fatigue substantiation procedures | |
JPS5575503A (en) | Rotor | |
Vardanian et al. | Statistical determination of the dimensions of minor planets | |
MUNSE et al. | Notched steel fatigue crack propagation during constant stress test divided into an initial, linear, and final stage |