JPS55134350A - Sound measuring method - Google Patents

Sound measuring method

Info

Publication number
JPS55134350A
JPS55134350A JP4096979A JP4096979A JPS55134350A JP S55134350 A JPS55134350 A JP S55134350A JP 4096979 A JP4096979 A JP 4096979A JP 4096979 A JP4096979 A JP 4096979A JP S55134350 A JPS55134350 A JP S55134350A
Authority
JP
Japan
Prior art keywords
electrical noise
bead weld
lengths
shifted
produced
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
Application number
JP4096979A
Other languages
Japanese (ja)
Inventor
Takatoshi Yoshioka
Seishin Kirihara
Kyo Matsuzaka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP4096979A priority Critical patent/JPS55134350A/en
Publication of JPS55134350A publication Critical patent/JPS55134350A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To obtain a reliable AE data not affected by an electrical noise by performing the measurement by shifting the center position of the distance between respective sound converters, which contain the sound propagation part, from the acoustic emission range.
CONSTITUTION: An example wherein the wave directing rods 2 the lengths of which are different from each other are used is shown. The lengths of the rods are made different from each other so that the center position of the measurement interval by the detector is shifted from the bead weld. By this, the position at which an electrical noise is produced can be shifted from the bead weld, a defect regarded in a traditional method as if an electrical noise was produced from the bead weld can be eliminated.
COPYRIGHT: (C)1980,JPO&Japio
JP4096979A 1979-04-06 1979-04-06 Sound measuring method Pending JPS55134350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4096979A JPS55134350A (en) 1979-04-06 1979-04-06 Sound measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4096979A JPS55134350A (en) 1979-04-06 1979-04-06 Sound measuring method

Publications (1)

Publication Number Publication Date
JPS55134350A true JPS55134350A (en) 1980-10-20

Family

ID=12595287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4096979A Pending JPS55134350A (en) 1979-04-06 1979-04-06 Sound measuring method

Country Status (1)

Country Link
JP (1) JPS55134350A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5259433A (en) * 1975-11-10 1977-05-16 Nihon Radiator Co Automatic temperature controlling system for automotive air conditioner
JPS54131228A (en) * 1978-03-31 1979-10-12 Nihon Radiator Co Mode control method in automatic airrconditioning of automobile and its device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5259433A (en) * 1975-11-10 1977-05-16 Nihon Radiator Co Automatic temperature controlling system for automotive air conditioner
JPS54131228A (en) * 1978-03-31 1979-10-12 Nihon Radiator Co Mode control method in automatic airrconditioning of automobile and its device

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