An automated method and device for the measurement of coating flexibility

Timo Lappalainen, Tapio Kanko, Hannu Olkkonen, P. Ahola

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A new method for determining the flexibility of paints and other coatings has been developed. Coated aluminium strips are stretched and the damage caused to the coating during stretching is monitored by means of an automatic image processing system. The stretching device, with a lighting and camera system specially designed to withstand cold conditions down to −25°C, gives useful information about the performance of coatings in cold climates. In addition to the elongation at which the paint film starts to crack, the development of cracking is also measured. A reduction in the test temperature was found to impair the flexibility properties of paints. Ageing can either impair or improve the flexibility properties of paints. The effect depends on the pain and the weathering time.

Original languageEnglish
Pages (from-to)614 - 620
Number of pages7
JournalMaterials and Structures
Volume26
Issue number10
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

Fingerprint

Paint
Coatings
Stretching
Weathering
Aluminum
Elongation
Image processing
Aging of materials
Lighting
Cameras
Cracks
Temperature

Keywords

  • wood
  • properties
  • measurement
  • coatings
  • automation

Cite this

Lappalainen, Timo ; Kanko, Tapio ; Olkkonen, Hannu ; Ahola, P. / An automated method and device for the measurement of coating flexibility. In: Materials and Structures. 1993 ; Vol. 26, No. 10. pp. 614 - 620.
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An automated method and device for the measurement of coating flexibility. / Lappalainen, Timo; Kanko, Tapio; Olkkonen, Hannu; Ahola, P.

In: Materials and Structures, Vol. 26, No. 10, 1993, p. 614 - 620.

Research output: Contribution to journalArticleScientificpeer-review

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KW - wood

KW - properties

KW - measurement

KW - coatings

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