JPH0215823B2 - - Google Patents
Info
- Publication number
- JPH0215823B2 JPH0215823B2 JP58185952A JP18595283A JPH0215823B2 JP H0215823 B2 JPH0215823 B2 JP H0215823B2 JP 58185952 A JP58185952 A JP 58185952A JP 18595283 A JP18595283 A JP 18595283A JP H0215823 B2 JPH0215823 B2 JP H0215823B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- circuit
- comparator
- outputs
- 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.)
- Expired - Lifetime
Links
- 230000005856 abnormality Effects 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 27
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 238000012935 Averaging Methods 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 5
- 230000004069 differentiation Effects 0.000 claims description 4
- 230000007257 malfunction Effects 0.000 description 4
- 239000010730 cutting oil Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (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)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58185952A JPS6079261A (ja) | 1983-10-06 | 1983-10-06 | 工具異常検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58185952A JPS6079261A (ja) | 1983-10-06 | 1983-10-06 | 工具異常検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6079261A JPS6079261A (ja) | 1985-05-07 |
JPH0215823B2 true JPH0215823B2 (zh) | 1990-04-13 |
Family
ID=16179745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58185952A Granted JPS6079261A (ja) | 1983-10-06 | 1983-10-06 | 工具異常検出装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6079261A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05285723A (ja) * | 1992-02-14 | 1993-11-02 | Hitachi Koki Co Ltd | チップ付き切削工具 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02190239A (ja) * | 1989-01-19 | 1990-07-26 | Nachi Fujikoshi Corp | 印刷配線板孔あけ機用ドリル異常検出装置 |
US6712160B1 (en) | 2000-11-07 | 2004-03-30 | Halliburton Energy Services Inc. | Leadless sub assembly for downhole detection system |
US6817425B2 (en) | 2000-11-07 | 2004-11-16 | Halliburton Energy Serv Inc | Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator |
US6681633B2 (en) * | 2000-11-07 | 2004-01-27 | Halliburton Energy Services, Inc. | Spectral power ratio method and system for detecting drill bit failure and signaling surface operator |
US7357197B2 (en) | 2000-11-07 | 2008-04-15 | Halliburton Energy Services, Inc. | Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface |
JP4569749B2 (ja) * | 2004-07-23 | 2010-10-27 | 旭硝子株式会社 | ガラス板の割れ検出方法及びその装置並びにガラス板の研磨方法及びその装置 |
-
1983
- 1983-10-06 JP JP58185952A patent/JPS6079261A/ja active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05285723A (ja) * | 1992-02-14 | 1993-11-02 | Hitachi Koki Co Ltd | チップ付き切削工具 |
Also Published As
Publication number | Publication date |
---|---|
JPS6079261A (ja) | 1985-05-07 |
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