JPS6483322A - Method for evaluating deep drawability of metallic sheet - Google Patents
Method for evaluating deep drawability of metallic sheetInfo
- Publication number
- JPS6483322A JPS6483322A JP62238183A JP23818387A JPS6483322A JP S6483322 A JPS6483322 A JP S6483322A JP 62238183 A JP62238183 A JP 62238183A JP 23818387 A JP23818387 A JP 23818387A JP S6483322 A JPS6483322 A JP S6483322A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- ratio
- ultrasonic
- propagation time
- longitudinal
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
PURPOSE:To evaluate in terms of on-line by the non-destructive measurement by propagating the ultrasonics in the plate thickness direction to obtain the speed ratio of the longitudinal wave speed and the mean speed of the two transversal waves and by obtaining the plastic strain ratio from the correlation between the speed ratio obtained previously and the plastic strain ratio. CONSTITUTION:A sensor part 10 is brought into contact with the metallic sheet and the ultrasonic is propagated to the plate thickness direction. The sensor part 10 is provided with a longitudinal ultrasonic probes 11, and transversal ultrasonic probes 12, 13 and each probe 11-13 is connected to propagation time measuring instruments 31-33 through ultrasonic flaw detectors 21-23 respectively. In this condition, the propagation time of the longitudinal waves, the propagation time of the transversal waves polarized in the rolling direction and the propagation time of the transversal waves polarized in the direction orthogonal to the rolling direction are measured and based on those measured results, the speed ratio of the ultrasonic between the longitudinal speed and mean speed of the two transversal waves is obtained. Based on this speed ratio and the correlation obtained previously between the speed ratio and the plastic strain ratio, the plastic ratio is to be obtained, therefore, the deep ability of the metallic sheet is evaluated by the non-destructive measurement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238183A JPS6483322A (en) | 1987-09-22 | 1987-09-22 | Method for evaluating deep drawability of metallic sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238183A JPS6483322A (en) | 1987-09-22 | 1987-09-22 | Method for evaluating deep drawability of metallic sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6483322A true JPS6483322A (en) | 1989-03-29 |
JPH0557542B2 JPH0557542B2 (en) | 1993-08-24 |
Family
ID=17026399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238183A Granted JPS6483322A (en) | 1987-09-22 | 1987-09-22 | Method for evaluating deep drawability of metallic sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483322A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04236724A (en) * | 1991-01-14 | 1992-08-25 | Sumitomo Metal Ind Ltd | Method for controlling temperature in continuous heat treatment line |
US5467655A (en) * | 1991-03-27 | 1995-11-21 | Nippon Steel Corporation | Method for measuring properties of cold rolled thin steel sheet and apparatus therefor |
JP2016176884A (en) * | 2015-03-23 | 2016-10-06 | 株式会社日立製作所 | Ultrasonic thickness measurement method and apparatus, and defect position detection method |
-
1987
- 1987-09-22 JP JP62238183A patent/JPS6483322A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04236724A (en) * | 1991-01-14 | 1992-08-25 | Sumitomo Metal Ind Ltd | Method for controlling temperature in continuous heat treatment line |
US5467655A (en) * | 1991-03-27 | 1995-11-21 | Nippon Steel Corporation | Method for measuring properties of cold rolled thin steel sheet and apparatus therefor |
JP2016176884A (en) * | 2015-03-23 | 2016-10-06 | 株式会社日立製作所 | Ultrasonic thickness measurement method and apparatus, and defect position detection method |
Also Published As
Publication number | Publication date |
---|---|
JPH0557542B2 (en) | 1993-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5714688A (en) | EMAT measurement of ductile cast iron nodularity | |
JP2613654B2 (en) | Ultrasonic testing | |
Dixon et al. | Inspection of rail track head surfaces using electromagnetic acoustic transducers (EMATs) | |
US4790188A (en) | Method of, and an apparatus for, evaluating forming capabilities of solid plate | |
Fukuoka et al. | Nondestructive residual-stress measurement in a wide-flanged rolled beam by acoustoelasticity: Acoustoelasticity stress analysis is applied to measure residual-stress distribution in a wide-flanged rolled beam and the results are compared with those obtained by the conventional destructive method | |
GB2091889A (en) | Plastic anisotropy in sheet materials | |
JPS6483322A (en) | Method for evaluating deep drawability of metallic sheet | |
Gori et al. | EMAT transducers and thickness characterization on aged boiler tubes | |
Klima et al. | Monitoring crack extension in fracture toughness tests by ultrasonics | |
JPS6431048A (en) | Method for measuring surface opening crack depth of concrete by ultrasonic wave | |
JPS61254849A (en) | Stress measuring method | |
JPS6078345A (en) | Method and device for on-line detection of inclusion of thin steel band | |
US6497151B1 (en) | Non-destructive testing method and apparatus to determine microstructure of ferrous metal objects | |
DE59609140D1 (en) | Method and device for the non-destructive determination of properties of a workpiece made of metal | |
JPH07248317A (en) | Ultrasonic flaw detecting method | |
Ogi et al. | Absolute measurement of ultrasonic attenuation by electromagnetic acoustic resonance | |
Sun | Application of guided acoustic waves to delamination detection | |
RU2025727C1 (en) | Method of determination of normal anisotropy sheet rolled stock | |
Budenkov et al. | Principal regularities of Pochhammer-wave interaction with defects | |
JP2611714B2 (en) | Ultrasonic applied measuring device | |
Popovics et al. | Comparison of DIN/ISO 8047 (Entwurf) to several standards on determination of ultrasonic pulse velocity in concrete | |
Garnier et al. | Determining the evolution of the elasticity modulus by surface waves according to the depth in a nitrided layer | |
FR2340549A1 (en) | Nondestructive ultrasonic sheet fault testing - uses sensitive pulsed echo and transmission probes located on both sides of specimen giving optimised test range | |
JP2773535B2 (en) | Ultrasonic applied measuring device | |
JPS6491055A (en) | Measurement of gel physical property |