Publication detail

Comparison of results of measuring by current NDT methods with results obtained through a new device for wood mechanical resistance measuring.

KLOIBER, M. TIPPNER, J. HEŘMÁNKOVÁ, V. ŠTAINBRUCH, J.

Original Title

Comparison of results of measuring by current NDT methods with results obtained through a new device for wood mechanical resistance measuring.

Type

conference paper

Language

English

Original Abstract

The aim of the paper is to compare traditionally used diagnostic methods for assessment of timber integrated in historical buildings with a newly proposed method of pin pushing. The new method using a diagnostic instrument for "in situ" timber assessment is based on the principle of measuring mechanical resistance against a tool (pin) penetration into wood. Experimental measuring was conducted using three softwood beams with damaged heads extracted from a historical building of an old citizen's house in Prague. The beams were assessed optically, further by means of stress wave, resistance drilling, GPR, screw withdrawal, and finally, by pin pushing. Afterwards, the beams were cut and analyzed for their physical and mechanical properties using standard samples. The results were used for a verification of measuring by the specific NDT devices. The results of the tests mainly manifest a very good correlation of the mean force necessary for pin pushing into timber with wood density and strength in compression perpendicular to the grain ascertained using the standard samples. The dependencies between the measured parameters and the density or the strength in compression perpendicular to the grain were stronger within pin pushing than within the other NDT methods.

Keywords

Pushing; Pin; Resistance; Mean force; Density

Authors

KLOIBER, M.; TIPPNER, J.; HEŘMÁNKOVÁ, V.; ŠTAINBRUCH, J.

Released

15. 10. 2012

Publisher

DOLNOSLASKIE WYDAWNICTWO EDUKACYJNE-DWE, 53-204, WROCLAW UL OJACA BEYZYMA 20 B, WROCLAW, 00000, POLAND

Location

Wroclaw

ISBN

978-83-7125-216-7

Book

STRUCTURAL ANALYSIS OF HISTORICAL CONSTRUCTIONS, VOLS 1-3

Pages from

2035

Pages to

2043

Pages count

9

BibTex

@inproceedings{BUT137808,
  author="Michal {Kloiber} and Jan {Tippner} and Věra {Heřmánková} and Jakub {Štainbruch}",
  title="Comparison of results of measuring by current NDT methods with results obtained through a new device for
wood mechanical resistance measuring.",
  booktitle="STRUCTURAL ANALYSIS OF HISTORICAL CONSTRUCTIONS, VOLS 1-3",
  year="2012",
  pages="2035--2043",
  publisher="DOLNOSLASKIE WYDAWNICTWO EDUKACYJNE-DWE, 53-204, WROCLAW UL OJACA BEYZYMA 20 B, WROCLAW, 00000, POLAND",
  address="Wroclaw",
  isbn="978-83-7125-216-7"
}