ES2040044T3 - Pila piezoelectrica de ondas de solicitacion. - Google Patents

Pila piezoelectrica de ondas de solicitacion.

Info

Publication number
ES2040044T3
ES2040044T3 ES199090301302T ES90301302T ES2040044T3 ES 2040044 T3 ES2040044 T3 ES 2040044T3 ES 199090301302 T ES199090301302 T ES 199090301302T ES 90301302 T ES90301302 T ES 90301302T ES 2040044 T3 ES2040044 T3 ES 2040044T3
Authority
ES
Spain
Prior art keywords
load
damping
propagation
propagation member
transducer
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
Application number
ES199090301302T
Other languages
English (en)
Inventor
Trevor James Holroyd
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.)
Stresswave Technlogy Ltd
Original Assignee
Stresswave Technlogy 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 Stresswave Technlogy Ltd filed Critical Stresswave Technlogy Ltd
Application granted granted Critical
Publication of ES2040044T3 publication Critical patent/ES2040044T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
    • G01L1/255—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons using acoustic waves, or acoustic emission
    • 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
    • G01N2291/02827—Elastic parameters, strength or force

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Discharge Heating (AREA)
  • Control Of Direct Current Motors (AREA)
  • Measurement Of Force In General (AREA)
  • Inert Electrodes (AREA)
  • Hybrid Cells (AREA)
  • Fuel Cell (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

UNA CELDA DE CARGA DE ONDA DE SOLICITACION (10) COMPRENDE UN MIEMBRO DE PROPAGACION (12) AL CUAL SE ACOPLA ACUSTICAMENTE UN TRANSCONDUCTOR (22). SE SUMINISTRAN IMPULSOS ELECTRICOS AL TRANSCONDUCTOR (22) DESDE UN GENERADOR DE IMPULSOS (24) Y LOS IMPULSOS ELECTRICOS SE CONVIERTEN EN SEÑALES DE ONDA DE SOLICITACION QUE SE PROPAGAN A TRAVES DEL MIEMBRO DE PROPAGACION (12). EL TRANSCONDUCTOR (22) IGUALMENTE DETECTA LAS ONDAS DE TENSION DESPUES DE LA PROPAGACION A TRAVES DEL MIEMBRO DE PROPAGACION (12) Y SUMINISTRA UNA SEÑAL ELECTRICA AL PROCESADOR (26) QUE DA UNA MEDIDA DE LA CARGA APLICADA A LA CELDA DE CARGA (10). LOS MIEMBROS DE AMORTIGUAMIENTO (14,16) QUE TIENEN SUPERFICIES PERFILADAS (15,17) SE VEN OBLIGADOS A TRASLADARSE EN CONTACTO DE AMORTIGUAMIENTO CON EL MIEMBRO DE PROPAGACION (12), CUANDO SE APLICA UNA CARGA A LA CELDA DE CARGA (10). LOS MIEMBROS DE AMORTIGUAMIENTO (14, 16) MODERAN LA PROPAGACION DE LAS ONDAS DE SOLICITACION EN EL MIEMBRO DE PROPAGACION (12) Y EL AMORTIGUAMIENTO ES PROPORCIONAL AL AREA DE CONTACTO DE AMORTIGUAMIENTO, AUMENTANDO EL CONTACTO DE AMORTIGUAMIENTO CON LA CARGA APLICADA. PARA MEDIR SE PUEDAN USAR CARGAS DE TENSION O DE COMPRESION Y SE PUEDEN USAR COMO UN PANEL SENSIBLE AL TOQUE.
ES199090301302T 1989-03-14 1990-02-07 Pila piezoelectrica de ondas de solicitacion. Expired - Lifetime ES2040044T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898905822A GB8905822D0 (en) 1989-03-14 1989-03-14 A stress wave load cell

Publications (1)

Publication Number Publication Date
ES2040044T3 true ES2040044T3 (es) 1993-10-01

Family

ID=10653291

Family Applications (1)

Application Number Title Priority Date Filing Date
ES199090301302T Expired - Lifetime ES2040044T3 (es) 1989-03-14 1990-02-07 Pila piezoelectrica de ondas de solicitacion.

Country Status (8)

Country Link
US (1) US5016480A (es)
EP (1) EP0387995B1 (es)
JP (1) JPH0654266B2 (es)
AT (1) ATE88270T1 (es)
DE (1) DE69001315T2 (es)
DK (1) DK0387995T3 (es)
ES (1) ES2040044T3 (es)
GB (1) GB8905822D0 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053965A1 (de) * 2006-11-16 2008-07-31 Jäger, Frank-Michael Verfahren und Vorrichtung zur Früherkennung von Bauwerksschäden
TWI385562B (zh) * 2009-08-28 2013-02-11 Geee Creations Inc Load element touch device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153338A (en) * 1961-11-22 1964-10-20 Kleesattel Claus Resonant sensing devices
SU513276A1 (ru) * 1974-07-29 1976-05-05 Томский Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Политехнический Институт Им.С.М.Кирова,Отделение N1 Пьезоэлектрическое устройство дл измерени статических усилий
US3967497A (en) * 1974-12-16 1976-07-06 Brown Horace D Vibrating force sensor
US3977242A (en) * 1975-03-14 1976-08-31 Brown Horace D Force measuring resonator
GB2124764B (en) * 1982-08-03 1986-01-08 Atomic Energy Authority Uk Ice detector
US4679430A (en) * 1983-03-30 1987-07-14 United Kingdom Atomic Energy Authority Ultrasonic liquid interface detector
EP0229837A1 (en) * 1985-06-14 1987-07-29 Hitachi Construction Machinery Co., Ltd. Method of measuring contact stress in contact surface between solids by ultrasonic wave
NL8501908A (nl) * 1985-07-03 1987-02-02 Tno Tastsensor.
SU1430767A1 (ru) * 1987-01-06 1988-10-15 Челябинский Политехнический Институт Им.Ленинского Комсомола Пьезоэлектрический преобразователь силы
WO1989001138A1 (fr) * 1987-07-30 1989-02-09 Hitachi Construction Machinery Co., Ltd. Procede de mesure de l'effort de contact a l'aide d'une onde ultrasonique

Also Published As

Publication number Publication date
JPH0654266B2 (ja) 1994-07-20
EP0387995B1 (en) 1993-04-14
ATE88270T1 (de) 1993-04-15
EP0387995A3 (en) 1991-04-10
EP0387995A2 (en) 1990-09-19
DK0387995T3 (da) 1993-08-02
DE69001315T2 (de) 1993-07-22
GB8905822D0 (en) 1989-04-26
JPH02284031A (ja) 1990-11-21
US5016480A (en) 1991-05-21
DE69001315D1 (de) 1993-05-19

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