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Development of a laser-based line scan measurement system for the surface characterization of reinforcing steel

  • Kai Osterminski and Christoph Gehlen
Published/Copyright: October 30, 2019
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Materials Testing
From the journal Materials Testing Volume 61 Issue 11

Abstract

The fatigue behavior of reinforcing bars is mainly influenced by their surface properties. Massive ribs and sharp notches provoke failure in fatigue. For the current research, it was necessary to develop a measurement system in order to allow for the highly precise measurement of the surface of fair sized fatigue specimens. The paper presents the boundary conditions at the beginning of the research project and gives a short overview of the measuring techniques currently used. It presents the development of a laser-based line scan (LLS) measuring system which applies the principle of laser-triangulation. The high accuracy and precision of the system of measurement was quantified in several investigations.

*Correspondence Address, Dr.-Ing. Kai Osterminski, Lehrstuhl Werkstoffe und Werkstoffprüfung im Bauwesen, TU München, Baumbachstr. 7, D-81245 Munich, Germany, E-mail: ,

Dr.-Ing. Kai Osterminski, born 1979, works in the field of materials in civil engineering. His work focuses on the performance and durability of reinforcing material (including ferrous and non-ferrous materials). He studied civil engineering at the Ruhr-University of Bochum and graduated in 2005, receiving a Doctorate in 2013 at the TU Munich focusing on the full-probabilistic modelling of reinforcement corrosion. He is currently in the process of habilitating in the field of Materials and Materials Testing. Since 2012, he has been leading the reinforcing technique group at the Center for Building Materials, TU Munich. Since April 2019, he has been Head of the Department Steel and Corrosion at the same institute where the former reinforcing technique group was integrated.

Prof. Dr.-Ing. Christoph Gehlen, born 1966, is active in the field of materials in civil engineering. His work focuses on the description and prediction of the service life of mineral and metallic building materials in dependence on exposure conditions. After studying Chemistry and Mineralogy in Bonn, he graduated in Civil Engineering in 1995 at the RWTH Aachen. A Doctorate at the RWTH Aachen followed in 2000. Together with two partners, he then founded an international engineering company for consulting in Munich. After accepting an appointment to a Chair at the University of Stuttgart in spring 2006, he took up his present position at the TUM in autumn 2008. He is involved in numerous national and international boards and committees.

References

1 ISO 15630-1: 2010: Steel for the reinforcement and prestressing of concrete – Test methods – Part 1: Reinforcing bars, rods and wire, ISO, Geneva Switzerland (2010) 10.31030/1708949 (in German)Search in Google Scholar

2 G.Rehm, W.Harre, W.Beul: Schwingfestigkeitsverhalten von Betonstählen unter wirklichkeitsnahen Beanspruchungs- und Umgebungsbedingungen, Schriftenreihe Deutscher Ausschuss für Stahlbeton e.V., No. 374, Beuth, Berlin, Germany (1986) 10.2366/3702642 (in German)Search in Google Scholar

3 G.Rehm: Beitrag zum Thema Dauerschwingfestigkeit von Betonstahl BSt 500 nach DIN 488 und 1045 – Eine Bewertung von Versuchsergebnissen und Einflussgrößen, Prüfstelle für Betonstahl Prof. Dr.-Ing. G. Rehm, http://www.pruefrehm.de, accessed: 4th July 2019 (in German)Search in Google Scholar

4 U.Nürnberger: Einfluss werkstoffabhängiger Größen auf das Dauerschwingverhalten naturharter Kohlenstoff-Silizium-Mangan-Betonrippenstähle. Stahl und Eisen98 (1978), No. 13, pp. 651–656 (in German)Search in Google Scholar

5 I. C.Jhamb: Fatigue of Reinforcing Bars, Dissertation, University of Alberta, Edmonton, Canada (1972)Search in Google Scholar

6 J.Fei, D.Darwin: Fatigue of High Relative Rib Area Reinforcing Bars, SM Report No. 54, University of Kansas, Kansas City, Kansas, USA (1999)Search in Google Scholar

7 H.Martin, P.Schießl: Dauerschwingfestigkeit von unbehandelten Betonstählen – Zusammenfassender Überblick über Versuchsergebnisse und theoretische Erkenntnisse, Institut für Betonstahl und Stahlbetonbau, Internal Report No. Sch/K-105/75, Aachen, Germany (1975) (in German, unpublished)Search in Google Scholar

8 C.Gehlen, K.Osterminski, T.Weirich: High-cycle fatigue behaviour of reinforcing steel under the effect of ongoing corrosion, fib Structural Journal17 (2016), No. 3, pp. 329–33710.1002/suco.201500094Search in Google Scholar

9 D. S.Nyce: Linear Position Sensors – Theory and Application, Wiley & Sons, New York, USA (2003) 10.1002/0471474282Search in Google Scholar

10 ECM Datensysteme: Rippenmesssystem, https://ecmdatensysteme.de, accessed 19th March 2019Search in Google Scholar

11 Scan in a Box, https://www.scaninabox.com, accessed 20th March 2019Search in Google Scholar

12 Micro-Epsilon: Laser Triangulation Sensors, https://www.micro-epsilon.co.uk, accessed 19th March 2019Search in Google Scholar

Published Online: 2019-10-30
Published in Print: 2019-11-04

© 2019, Carl Hanser Verlag, München

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Non-destructive testing derived parameters for microstructure-based residual service life assessment of aging metallic materials in nuclear engineering
  5. Influence of cryogenic treatment on the corrosion of AZ91 and AM60 magnesium alloys in an isotonic solution
  6. A test method for the determination of the cyclic material properties of electrical steel strip under strain-controlled loading
  7. Development of a laser-based line scan measurement system for the surface characterization of reinforcing steel
  8. Inclusion and microstructure characteristics in steel with TiO2 nanoparticle additions
  9. Mechanical test procedures for the evaluation of hydrogen-assisted damage in high-strength steel
  10. Effects of particle reinforcement on the bending and compressive behaviors of composite pipes
  11. Effects of process parameters on the mechanical properties of dissimilar thin Al welds
  12. Effect of hard chrome plating parameters on the wear resistance of low carbon steel
  13. The use of color etching to study the microstructure of laser welded steel used in the automotive industry
  14. Mechanical properties of plain woven kenaf/glass fiber reinforced polypropylene hybrid composites
  15. Optimization of cryogenic treatment effects on the surface roughness of cutting tools
  16. Effects of ball burnishing on the surface quality of Al 7075 alloy
  17. An investigation of the effect of tool approaching angle in turning of CFRP composite materials
https://doi.org/10.3139/120.111418

Articles in the same Issue

  1. Inhalt/Contents
  2. Contents
  3. Fachbeiträge/Technical Contributions
  4. Non-destructive testing derived parameters for microstructure-based residual service life assessment of aging metallic materials in nuclear engineering
  5. Influence of cryogenic treatment on the corrosion of AZ91 and AM60 magnesium alloys in an isotonic solution
  6. A test method for the determination of the cyclic material properties of electrical steel strip under strain-controlled loading
  7. Development of a laser-based line scan measurement system for the surface characterization of reinforcing steel
  8. Inclusion and microstructure characteristics in steel with TiO2 nanoparticle additions
  9. Mechanical test procedures for the evaluation of hydrogen-assisted damage in high-strength steel
  10. Effects of particle reinforcement on the bending and compressive behaviors of composite pipes
  11. Effects of process parameters on the mechanical properties of dissimilar thin Al welds
  12. Effect of hard chrome plating parameters on the wear resistance of low carbon steel
  13. The use of color etching to study the microstructure of laser welded steel used in the automotive industry
  14. Mechanical properties of plain woven kenaf/glass fiber reinforced polypropylene hybrid composites
  15. Optimization of cryogenic treatment effects on the surface roughness of cutting tools
  16. Effects of ball burnishing on the surface quality of Al 7075 alloy
  17. An investigation of the effect of tool approaching angle in turning of CFRP composite materials
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