Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels

Navodariu, Nicolae; Branzei, Mihai; Ciocoiu, Robert; Ciuca, Ion; Coman, Razvan; Raiciu, Anca D.; Semenescu, Augustin; Antoniac, Iulian; Gradinaru, Sebastian; Cristescu, Ioan

Nicolae Navodariu, Mihai Branzei, Robert Ciocoiu, Ion Ciuca, Razvan Coman, Anca D. Raiciu, Augustin Semenescu, Iulian Antoniac, Sebastian Gradinaru, Ioan Cristescu

Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels

Abstract:
Flame straightening is a technology process used to eliminate deformations. This method relies on local heating of the material to correct geometry or damaged parts. In the local automobile services its main use is for repairs of less critical deformed components. The maximum temperature and thermal gradient, heating time, cooling rate and number of heating cycles affect the mechanical properties since local heating can alter material microstructure. The aim of this research was to determine the mechanical characteristics of thin steel plates repaired by local heating associated with plastic deformation (similar to hot working) and cold straightening (similar to local cold working) for automotive side and door panels made of structural steel. Thin sheet plates, 0.9mm thickness, were deformed by impact and repaired by local heating using the flame and induction heating then plastically deformed while hot as well as straightened without heating. The heat repaired samples were studied by light microscopy to determine microstructure change and samples were tensile tested to determine their mechanical characteristics. Local excessive grain growth generates anisotropy, the assembly behaves as a composite material with regions that show significant plastic deformations while others little or no deformations at al. Without procedures adjusted to each material repairs involving heating are to be avoided, cold working should be employed when replacement is not possible.

Keywords:
flame straightening; grain growth; mechanical characteristics

Issue: 2019 Volume 56, Issue 4

Pages: 750-758

Publication date: 2019/12/30

https://doi.org/10.37358/MP.19.4.5263

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
NAVODARIU, N., BRANZEI, M., CIOCOIU, R., CIUCA, I., COMAN, R., RAICIU, A.D., SEMENESCU, A., ANTONIAC, I., GRADINARU, S., CRISTESCU, I., Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels, Mater. Plast., 56(4), 2019, 750-758. https://doi.org/10.37358/MP.19.4.5263

Vancouver
Navodariu N, Branzei M, Ciocoiu R, Ciuca I, Coman R, Raiciu AD, Semenescu A, Antoniac I, Gradinaru S, Cristescu I. Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels. Mater. Plast.[internet]. 2019 Dec;56(4):750-758. Available from: https://doi.org/10.37358/MP.19.4.5263

APA 6th edition
Navodariu, N., Branzei, M., Ciocoiu, R., Ciuca, I., Coman, R., Raiciu, A.D.,... Cristescu, I. (2019). Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels. Materiale Plastice, 56(4), 750-758. https://doi.org/10.37358/MP.19.4.5263

Harvard
Navodariu, N., Branzei, M., Ciocoiu, R., Ciuca, I., Coman, R., Raiciu, A.D., Semenescu, A., Antoniac, I., Gradinaru, S., Cristescu, I. (2019). 'Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels', Materiale Plastice, 56(4), pp. 750-758. https://doi.org/10.37358/MP.19.4.5263

IEEE
N. Navodariu, M. Branzei, R. Ciocoiu, I. Ciuca, R. Coman, A.D. Raiciu, A. Semenescu, I. Antoniac, S. Gradinaru, I. Cristescu, "Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels". Materiale Plastice, vol. 56, no. 4, pp. 750-758, 2019. [online]. https://doi.org/10.37358/MP.19.4.5263

Text
Nicolae Navodariu, Mihai Branzei, Robert Ciocoiu, Ion Ciuca, Razvan Coman, Anca D. Raiciu, Augustin Semenescu, Iulian Antoniac, Sebastian Gradinaru, Ioan Cristescu,
Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels,
Materiale Plastice,
Volume 56, Issue 4,
2019,
Pages 750-758,
ISSN 2668-8220,
https://doi.org/10.37358/MP.19.4.5263.
(https://revmaterialeplastice.ro/Articles.asp?ID=5263)
Keywords: flame straightening; grain growth; mechanical characteristics

RIS
TY - JOUR
T1 - Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels
A1 - Navodariu, Nicolae
A2 - Branzei, Mihai
A3 - Ciocoiu, Robert
A4 - Ciuca, Ion
A5 - Coman, Razvan
A6 - Raiciu, Anca D.
A7 - Semenescu, Augustin
A8 - Antoniac, Iulian
A9 - Gradinaru, Sebastian
A10 - Cristescu, Ioan
JF - Materiale Plastice
JO - Mater. Plast.
PB - Materiale Plastice SRL
SN - 2668-8220
Y1 - 2019
VL - 56
IS - 4
SP - 750
EP - 758
UR - https://doi.org/10.37358/MP.19.4.5263
KW - flame straightening
KW - grain growth
KW - mechanical characteristics
ER -

BibTex
@article{MatPlast2019P750,
author = {Navodariu Nicolae and Branzei Mihai and Ciocoiu Robert and Ciuca Ion and Coman Razvan and Raiciu Anca D. and Semenescu Augustin and Antoniac Iulian and Gradinaru Sebastian and Cristescu Ioan},
title = {Effect of Local Heating on the Mechanical Characteristics of Repaired Automotive Panels},
journal = {Materiale Plastice},
volume = {56},
number = {4},
pages = {750-758},
year = {2019},
issn = {2668-8220},
doi = {https://doi.org/10.37358/MP.19.4.5263},
url = {https://revmaterialeplastice.ro/Articles.asp?ID=5263}
}

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