FR2449880A1 - Procede et appareil permettant de detecter des defauts de surface sur une piece - Google Patents

Procede et appareil permettant de detecter des defauts de surface sur une piece

Info

Publication number
FR2449880A1
FR2449880A1 FR7926289A FR7926289A FR2449880A1 FR 2449880 A1 FR2449880 A1 FR 2449880A1 FR 7926289 A FR7926289 A FR 7926289A FR 7926289 A FR7926289 A FR 7926289A FR 2449880 A1 FR2449880 A1 FR 2449880A1
Authority
FR
France
Prior art keywords
inspection
workpiece
surface defects
detecting surface
laser
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
FR7926289A
Other languages
English (en)
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Publication of FR2449880A1 publication Critical patent/FR2449880A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'INVENTION CONCERNE UN PROCEDE ET UN APPAREIL DE DETECTION DE DEFAUTS SUPERFICIELS SUR UNE PIECE QUI A SUBI UNE OPERATION MECANIQUE. L'INSPECTION D'UNE PIECE P EST REALISEE PAR BALAYAGE DE LA SURFACE DE LA PIECE AU MOYEN D'UN FAISCEAU LASER ET UTILISE UN MIROIR OSCILLANT 16 QUI DEVIE LE FAISCEAU D'UN LASER 10. DES PHOTOMULTIPLICATEURS 22 ET 24 SERVENT A PRODUIRE DES SIGNAUX INDIQUANT RESPECTIVEMENT L'AMPLITUDE DE LA COMPOSANTE SPECULAIRE ET DE LA COMPOSANTE DIFFUSEE DANS UNE DIRECTION PREDETERMINEE. CES SIGNAUX SONT COMBINES DE FACON A ELIMINER LE BRUIT RELATIF A LA RUGOSITE SUPERFICIELLE. LE SIGNAL COMBINE EST COMPARE A UNE VALEUR DE SEUIL INDICATIVE DE LA PRESENCE DE DEFAUTS SUPERFICIELS. L'INVENTION PERMET DE REALISER L'INSPECTION DE PIECES A LEUR SORTIE D'UNE CHAINE DE PRODUCTION.
FR7926289A 1978-10-24 1979-10-23 Procede et appareil permettant de detecter des defauts de surface sur une piece Pending FR2449880A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69439/78A IT1108254B (it) 1978-10-24 1978-10-24 Procedimento e dispositivo per il ilevamento di difetti superficiali di un pezzo che ha subito una lavorazione meccanica

Publications (1)

Publication Number Publication Date
FR2449880A1 true FR2449880A1 (fr) 1980-09-19

Family

ID=11312137

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926289A Pending FR2449880A1 (fr) 1978-10-24 1979-10-23 Procede et appareil permettant de detecter des defauts de surface sur une piece

Country Status (7)

Country Link
US (1) US4296333A (fr)
JP (1) JPS5559332A (fr)
CA (1) CA1122672A (fr)
DE (1) DE2936689A1 (fr)
FR (1) FR2449880A1 (fr)
GB (1) GB2032616B (fr)
IT (1) IT1108254B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376583A (en) * 1981-05-12 1983-03-15 Aeronca Electronics, Inc. Surface inspection scanning system
GB2117897B (en) * 1982-03-03 1986-04-16 Sira Ltd Detecting surface defects
CH663473A5 (de) * 1983-04-26 1987-12-15 Volpi Ag Verfahren zum optischen bestimmen der oberflaechenbeschaffenheit von festkoerpern.
DE3426332A1 (de) * 1984-07-17 1986-01-30 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optische rauheitssonde mit abtastung der indikatrix
DE3621567A1 (de) * 1985-06-28 1987-01-02 Ando Electric Mit reflektiertem licht arbeitender oberflaechenrauheitsanalysator
US6088104A (en) * 1994-12-02 2000-07-11 Veridian Erim International, Inc. Surface characterization apparatus
IT1302609B1 (it) * 1998-10-06 2000-09-29 Techint Spa Procedimento e relativa apparecchiatura per la misurazione delledeviazioni di forma di superfici lavorate.
WO2007017940A1 (fr) * 2005-08-10 2007-02-15 Raytex Corporation Dispositif d'inspection de défauts à une extrémité
FR3031183B1 (fr) 2014-12-31 2018-01-26 Arianegroup Sas Procede et dispositif pour le controle laser de l'etat d'une surface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894570A (en) * 1959-07-15 1962-04-26 British Iron Steel Research Improvements in or relating to the detection of surface abnormalities
FR1543704A (fr) * 1966-11-10 1968-10-25 Leitz Ernst Gmbh Procédé optique de détermination des défauts géométriques d'une surface de forme imposée, et dispositif pour la mise en oeuvre de ce procédé
US3984189A (en) * 1973-01-19 1976-10-05 Hitachi Electronics, Ltd. Method and apparatus for detecting defects in a surface regardless of surface finish
DE2749873A1 (de) * 1976-12-01 1978-06-08 Ferranti Ltd Detektoranordnung fuer optische ueberwachung von gegenstaenden
US4097160A (en) * 1974-09-06 1978-06-27 Canon Kabushiki Kaisha Method for inspecting object defection by light beam

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162126A (en) * 1976-12-10 1979-07-24 Hitachi, Ltd. Surface detect test apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894570A (en) * 1959-07-15 1962-04-26 British Iron Steel Research Improvements in or relating to the detection of surface abnormalities
FR1543704A (fr) * 1966-11-10 1968-10-25 Leitz Ernst Gmbh Procédé optique de détermination des défauts géométriques d'une surface de forme imposée, et dispositif pour la mise en oeuvre de ce procédé
US3984189A (en) * 1973-01-19 1976-10-05 Hitachi Electronics, Ltd. Method and apparatus for detecting defects in a surface regardless of surface finish
US4097160A (en) * 1974-09-06 1978-06-27 Canon Kabushiki Kaisha Method for inspecting object defection by light beam
DE2749873A1 (de) * 1976-12-01 1978-06-08 Ferranti Ltd Detektoranordnung fuer optische ueberwachung von gegenstaenden

Also Published As

Publication number Publication date
IT1108254B (it) 1985-12-02
CA1122672A (fr) 1982-04-27
GB2032616B (en) 1983-01-06
US4296333A (en) 1981-10-20
IT7869439A0 (it) 1978-10-24
DE2936689A1 (de) 1980-04-30
GB2032616A (en) 1980-05-08
JPS5559332A (en) 1980-05-02

Similar Documents

Publication Publication Date Title
US4290698A (en) Apparatus for testing surface roughness
US4440496A (en) Process and device for inspecting and checking the internal surface of a hollow cylindrical workpiece which has undergone mechanical working
JPS6453139A (en) Surface nature measuring apparatus and method
SE468925B (sv) En metod och en anordning foer att reducera den avstaandsberoende foerstaerkningsfaktorn vid maetning av stroemningsroerelser med en bildgivande laser-doppler teknik, i synnerhet vid maetning av blodperfusion genom en vaevnad
FR2449880A1 (fr) Procede et appareil permettant de detecter des defauts de surface sur une piece
FI103076B (fi) Menetelmä ja laite kuoren detektoimiseksi ja puun ja hakkeen kuorinta- asteen mittaamiseksi
US3834822A (en) Method and apparatus for surface defect detection using detection of non-symmetrical patterns of non-specularly reflected light
ATE19311T1 (de) Vorrichtung zum feststellen von defekten mittels eines aussermittigen lichtstrahles.
US9606096B2 (en) Method and apparatus for detecting cracks in eggshells
EP0008010A1 (fr) Méthode pour détecter des défauts sur des surfaces
JPS55149830A (en) Inspection apparatus for appearance of spherical body
HU202977B (en) Apparatus for geometrical testing of spherical bodies, preferably steel balls
JPS643545A (en) Method and apparatus for inspection
JPS57161642A (en) Inspecting device for defect of surface
JPS56168107A (en) Surface inspecting device
JPS55117946A (en) Flaw detection method of hollow shaft inside surface
JPS5728239A (en) Inspection of defect on cylinder surface
JPS5756704A (en) Detector for surface flaw of bloom
JPS5224554A (en) Surface inspection device
SU729439A1 (ru) Способ измерени радиуса кривизны цилиндрической поверхности
JPS6415641A (en) Apparatus for inspecting inside of tube
SU766225A1 (ru) Способ измерени шероховатости поверхности
JPS5483885A (en) Surface inspector
SU798566A1 (ru) Способ обнаружени поверхностныхдЕфЕКТОВ HA издЕли Х B фОРМЕ ТЕл BPA-щЕНи
SU845089A1 (ru) Ультразвуковой дефектоскоп