Detail publikace

Parameter Determination Analysis of the Findings from the Application of an Ultrasonic Pulse Method for the Evaluation of Wood Condition

Originální název

Parameter Determination Analysis of the Findings from the Application of an Ultrasonic Pulse Method for the Evaluation of Wood Condition

Anglický název

Parameter Determination Analysis of the Findings from the Application of an Ultrasonic Pulse Method for the Evaluation of Wood Condition

Jazyk

en

Originální abstrakt

The paper deals with the assessment of the condition of wood with regard to the evaluation of degradation using an ultrasonic pulse method. A whole range of non-destructive techniques based on various electrophysical processes are used in wood analysis. However, most of them are based on measuring the velocity of the passage of an ultrasound pulse. This article analyzes such a measurement technique applied to fir wood of different ages, 17th - 21st century, taken from the embedded wood structures of ceilings or roofs in historical and modern buildings. The prepared samples took account of wood anisotropy in the precise determination of longitudinal and transverse direction; additionally, bulk density was specified for each sample. The measurement of ultrasonic pulses was carried out in all directions, and the results were analyzed according to the origin of the fir samples. Moreover, other significant wood characteristics which affect the velocity of pulse passage at a macroscopic scale, i.e., cracks, knots and bulk density, were also considered. Simultaneously, the relationship between the moisture content of wood and the velocity of pulse passage was evaluated. The conclusions from this analysis are useful for the practical application of ultrasound methods in the evaluation of the degree of wood degradation in real historical wooden structures.

Anglický abstrakt

The paper deals with the assessment of the condition of wood with regard to the evaluation of degradation using an ultrasonic pulse method. A whole range of non-destructive techniques based on various electrophysical processes are used in wood analysis. However, most of them are based on measuring the velocity of the passage of an ultrasound pulse. This article analyzes such a measurement technique applied to fir wood of different ages, 17th - 21st century, taken from the embedded wood structures of ceilings or roofs in historical and modern buildings. The prepared samples took account of wood anisotropy in the precise determination of longitudinal and transverse direction; additionally, bulk density was specified for each sample. The measurement of ultrasonic pulses was carried out in all directions, and the results were analyzed according to the origin of the fir samples. Moreover, other significant wood characteristics which affect the velocity of pulse passage at a macroscopic scale, i.e., cracks, knots and bulk density, were also considered. Simultaneously, the relationship between the moisture content of wood and the velocity of pulse passage was evaluated. The conclusions from this analysis are useful for the practical application of ultrasound methods in the evaluation of the degree of wood degradation in real historical wooden structures.

BibTex


@article{BUT100484,
  author="Jiří {Brožovský} and Jan {Vaněrek}",
  title="Parameter Determination Analysis of the Findings from the Application of an Ultrasonic Pulse Method for the Evaluation of Wood Condition",
  annote="The paper deals with the assessment of the condition of wood with regard to the evaluation of degradation using an ultrasonic pulse method. A whole range of non-destructive techniques based on various electrophysical processes are used in wood analysis. However, most of them are based on measuring the velocity of the passage of an ultrasound pulse. This article analyzes such a measurement technique applied to fir wood of different ages, 17th - 21st century,  taken from the embedded wood structures of ceilings or roofs in historical and modern buildings. The prepared samples took account of wood anisotropy in the precise determination of longitudinal and transverse direction; additionally, bulk density was specified for each sample. The measurement of ultrasonic pulses was carried out in all directions, and the results were analyzed according to the origin of the fir samples. Moreover, other significant wood characteristics which affect the velocity of pulse passage at a macroscopic scale, i.e., cracks, knots and bulk density, were also considered. Simultaneously, the relationship between the moisture content of wood and the velocity of pulse passage was evaluated. The conclusions from this analysis are useful for the practical application of ultrasound methods in the evaluation of the degree of wood degradation in real historical wooden structures.",
  address="Regional Museum of Carinthia",
  chapter="100484",
  institution="Regional Museum of Carinthia",
  number="7",
  volume="20",
  year="2013",
  month="july",
  pages="71--80",
  publisher="Regional Museum of Carinthia",
  type="journal article - other"
}