Automatic Inspection
Study for the Textile Industry
Contents:
The study is divided into two sections. The first section was written exclusively
by the three co-authors in complete independence of the inspection system
manufacturers. Particular emphasis was placed on providing a strictly objective
account of the scientific and technical facts.
Upon reading the study, the reader should be able to evaluate information and
materials about inspection systems independently, as well as to assess his own
opportunities and requirements accurately.
At the same time, in order to provide the reader with the opportunity to become
acquainted with the entire range of automatic inspection systems on the market
today, articles written by the inspection system manufacturers have been
incorporated into the second section; the authors of the study had no editorial
influence whatsoever on the contents of these articles.
- Preface
- Description of the problem
- Division of the problem based on a product-production process scheme
- Division of the products
- Production process; possible inspection sites
- Basic conditions of production
- Integration into the production process
- Economic feasibility
- Current Situation
- Inspection systems today
- Example: laser scanners
- Developmental Trends
- Sensor types
- Evaluation technology
- Adaptability
- Operation
- Quality assurance concepts
- Quality documentation
- Defect Classification from the Practitioner's Point of View
- Local and global defects
- Surface defects on woven, knit, and nonwoven goods
- (warp, weft, local, weave, texture, pattern...)
- Coating defects
- Color defects
- Equipment defects
- Printing defects
- Technical Explanations
- Measurement of local parameters
- Laser scanners
- Light scanners
- CCD line cameras
- Multi-channel scanners
- Measurement of global parameters
- Electromagnetic spectrum
- Color spaces, color measurement
- Measurement of gloss/haze
- Roughness, feel
- Moisture content measurement
- Temperature measurement
Technical Terminology
laser, scanner, telecentricity, bright-field, dark-field, reflection, transmission,
absorption, fluorescence, light sources, LEDs, metal steam lamps, CCD, line, array,
PMT, Si diode, avalanche diode, local resolution, scanning theorem, data quantity,
binarization, AD converter, vision system, quality assurance concept, fuzzy
procedure, neuronal network, moire, fraktale, chaos, classification (human, machine),
K(A)I, expert knowledge, knowledge engineer, morphology, etc.
Target Market
This study has been developed especially for those individuals who are responsible
for production, finishing or quality assurance, or for those individuals who are
involved in the decision-making process in such areas.
Publishers, Length and Price of the Study
The study is being published independently by the three co-authors Bertram
Nickolay, Karl-Heinz Schicktanz and Harald Schmalfuß.
The length of the study is approximately 300 pages, DIN A4 format, glue-bound.
The study is bilingual German/English
Price: Special prepaid EMAIL price (incl. tax+shipping): 250.00 DM or
About the Authors
Dr.-Ing. Bertram Nickolay, born in 1953, studied telecommunications at the
University for Applied Science of Saarland, and electrical engineering at the
Technical University of Berlin. Since 1981, he has been a staff member of the
Fraunhofer Institute for Production Systems and Construction Technology (IPK
Berlin).
Dr. Nickolay received his doctorate of engineering degree in 1990 from the
Technical University of Berlin in the field of construction design and
manufacturing. His dissertation was entitled "A supervised learning image
evaluation system for the detection of surface defects."
Since 1991 Dr. Nickolay has headed the department of pattern recognition at the
IPK. In recognition of his work in the area of applied research, he was awarded
the Joseph von Fraunhofer Prize in 1992.
Dip.-Ing. (FH) Karl-Heinz Schicktanz, born in 1926, completed his studies in textile
technology. He then worked for over two decades as production manager for
several well-known equipment supply companies and weaving mills.
Mr. Schicktanz spent the subsequent ten years with Erwin Sick GmbH, Munich
division, a company devoted to surface inspection technology. He was instrumental
in promoting and gaining acceptance for automatic surface inspection. His
numerous publications have dealt, and continue to deal, with this topic.
He is currently working as an independent consultant for the textile industry.
Dr. Harald Schmalfuß, born in 1949, studied physics at the Friedrich Alexander
University in Erlangen. He completed his diploma and doctoral dissertations in the
Department of Applied Optics.
From 1979 to 1986 Dr. Schmalfuss worked at the Battelle Institute in Frankfurt am
Main, eventually becoming manager of the control systems department. His work
focused primarily on the area of automatic industrial opto-electronic in-line
measurement technology.
From 1986 to 1990 he was the manager first of research and development, and then
of electronic systems, at Erwin Sick GmbH, Munich division, a company specializing
in surface inspection technology.
In 1990 he accepted a position as technical manager with Durag GmbH in Hamburg.
In 1992 Dr. Schmalfuß founded his own company in Geretsried, Germany, opdix
OptoElectronic GmbH, Consultation-Development-Sales, of which he is managing
director.
Important Notice
This study and any portion thereof are authorized only for the internal use of
purchasers of the study. Using the study for any other purpose, or passing it on
to third parties, is strictly forbidden. Neither the study, nor any portion thereof,
may be reproduced in any manner whatsoever, including digital data reproduction,
without express written permission from the authors. The company articles are
excepted from these restrictions; they may be reproduced at will.