Craig Beyers | Griffith University (original) (raw)
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Papers by Craig Beyers
The precision and accuracy of acoustic instrument calibrations is fundamental in ensuring the val... more The precision and accuracy of acoustic instrument calibrations is fundamental in ensuring the validity and defensibility of acoustic measurements. The measurement error is additive to the overall uncertainty or error associated with acoustic calculations and modelling techniques, where these rely on measurement data as a source of acoustic data. Therefore, the tolerance of the calibration is a fundamental component in determining the accuracy of all applications that rely on acoustic measurement data. National and International metrology standards define the methodologies adopted in acoustic calibration. Currently the IEC 61672 standard is adopted for the periodic testing of field instruments. This paper provides an overview of the changes in calibration requirements of the IEC 61672 standard relative to the earlier versions of IEC 61672 and the IEC 652 standard. The paper then explores in more detail from an end user perspective the implications of calibration methodologies and the...
Planning policies across major cities in Australia actively encourage increased dwelling density,... more Planning policies across major cities in Australia actively encourage increased dwelling density, sustainable infill development and transit oriented development to maximise land use and minimise urban sprawl. For asphalt manufacturing facilities, this increased densification can often lead to conflict between lawfully operating, existing asphalt plants and new residences. Asphalt production in Australia, as with most industries, strives for ongoing improvements to both advance the performance of pavements and provide for cost-effective recycling of waste materials. The use of reclaimed asphalt pavement (RAP) and crumbed rubber (sourced from recycled tyres) as inputs into road pavements are two environmentally sustainable improvements gaining traction in Australia. This paper provides a comparison of odour emissions from traditional hot mix asphalt production with emissions from a range of RAP and crumbed rubber products and highlights how the use of these sustainable products could result in a worsening of land use planning conflicts moving forward. Through this analysis, the paper provides guidance for asphalt producers seeking to introduce these products into new or existing plants.
The precision and accuracy of acoustic instrument calibrations is fundamental in ensuring the val... more The precision and accuracy of acoustic instrument calibrations is fundamental in ensuring the validity and defensibility of acoustic measurements. The measurement error is additive to the overall uncertainty or error associated with acoustic calculations and modelling techniques, where these rely on measurement data as a source of acoustic data. Therefore, the tolerance of the calibration is a fundamental component in determining the accuracy of all applications that rely on acoustic measurement data. National and International metrology standards define the methodologies adopted in acoustic calibration. Currently the IEC 61672 standard is adopted for the periodic testing of field instruments. This paper provides an overview of the changes in calibration requirements of the IEC 61672 standard relative to the earlier versions of IEC 61672 and the IEC 652 standard. The paper then explores in more detail from an end user perspective the implications of calibration methodologies and the...
Planning policies across major cities in Australia actively encourage increased dwelling density,... more Planning policies across major cities in Australia actively encourage increased dwelling density, sustainable infill development and transit oriented development to maximise land use and minimise urban sprawl. For asphalt manufacturing facilities, this increased densification can often lead to conflict between lawfully operating, existing asphalt plants and new residences. Asphalt production in Australia, as with most industries, strives for ongoing improvements to both advance the performance of pavements and provide for cost-effective recycling of waste materials. The use of reclaimed asphalt pavement (RAP) and crumbed rubber (sourced from recycled tyres) as inputs into road pavements are two environmentally sustainable improvements gaining traction in Australia. This paper provides a comparison of odour emissions from traditional hot mix asphalt production with emissions from a range of RAP and crumbed rubber products and highlights how the use of these sustainable products could result in a worsening of land use planning conflicts moving forward. Through this analysis, the paper provides guidance for asphalt producers seeking to introduce these products into new or existing plants.