JPH0516540Y2 - - Google Patents
Info
- Publication number
- JPH0516540Y2 JPH0516540Y2 JP16289287U JP16289287U JPH0516540Y2 JP H0516540 Y2 JPH0516540 Y2 JP H0516540Y2 JP 16289287 U JP16289287 U JP 16289287U JP 16289287 U JP16289287 U JP 16289287U JP H0516540 Y2 JPH0516540 Y2 JP H0516540Y2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- wall
- piezoelectric element
- behind
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 33
- 239000002184 metal Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 230000000644 propagated effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000001913 Atriplex hortensis Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004297 night vision Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16289287U JPH0516540Y2 (en]) | 1987-10-23 | 1987-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16289287U JPH0516540Y2 (en]) | 1987-10-23 | 1987-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0167593U JPH0167593U (en]) | 1989-05-01 |
| JPH0516540Y2 true JPH0516540Y2 (en]) | 1993-04-30 |
Family
ID=31447131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16289287U Expired - Lifetime JPH0516540Y2 (en]) | 1987-10-23 | 1987-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516540Y2 (en]) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6775970B2 (ja) * | 2016-03-04 | 2020-10-28 | 三菱重工業株式会社 | 埋設物探査装置、掘削システム及び埋設物探査方法 |
| JP7326181B2 (ja) * | 2020-02-10 | 2023-08-15 | トヨタホーム株式会社 | 長尺材の位置探索方法 |
-
1987
- 1987-10-23 JP JP16289287U patent/JPH0516540Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0167593U (en]) | 1989-05-01 |
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