JPS6138812B2 - - Google Patents

Info

Publication number
JPS6138812B2
JPS6138812B2 JP55094790A JP9479080A JPS6138812B2 JP S6138812 B2 JPS6138812 B2 JP S6138812B2 JP 55094790 A JP55094790 A JP 55094790A JP 9479080 A JP9479080 A JP 9479080A JP S6138812 B2 JPS6138812 B2 JP S6138812B2
Authority
JP
Japan
Prior art keywords
signal
frequency
level
band
selection means
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
Application number
JP55094790A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5719634A (en
Inventor
Mikihiko Hamazaki
Kozo Ooba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanadevia Corp
Original Assignee
Hitachi Shipbuilding and Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Shipbuilding and Engineering Co Ltd filed Critical Hitachi Shipbuilding and Engineering Co Ltd
Priority to JP9479080A priority Critical patent/JPS5719634A/ja
Priority to US06/218,770 priority patent/US4399514A/en
Publication of JPS5719634A publication Critical patent/JPS5719634A/ja
Publication of JPS6138812B2 publication Critical patent/JPS6138812B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/04—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by acoustic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/36—Investigating fluid-tightness of structures by using fluid or vacuum by detecting change in dimensions of the structure being tested
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02872—Pressure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measuring Fluid Pressure (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Examining Or Testing Airtightness (AREA)
JP9479080A 1979-12-26 1980-07-10 Inspecting method for internal pressure of closed can Granted JPS5719634A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9479080A JPS5719634A (en) 1980-07-10 1980-07-10 Inspecting method for internal pressure of closed can
US06/218,770 US4399514A (en) 1979-12-26 1980-12-22 Method of inspecting internal pressures in sealed containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9479080A JPS5719634A (en) 1980-07-10 1980-07-10 Inspecting method for internal pressure of closed can

Publications (2)

Publication Number Publication Date
JPS5719634A JPS5719634A (en) 1982-02-01
JPS6138812B2 true JPS6138812B2 (enrdf_load_stackoverflow) 1986-09-01

Family

ID=14119868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9479080A Granted JPS5719634A (en) 1979-12-26 1980-07-10 Inspecting method for internal pressure of closed can

Country Status (1)

Country Link
JP (1) JPS5719634A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62115333A (ja) * 1985-11-14 1987-05-27 Yukio Ogawa 超微圧応答型多機能センサ−装置

Also Published As

Publication number Publication date
JPS5719634A (en) 1982-02-01

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