Estimation of mass and moisture content of flat square lumber in a stack during air-drying process by the vibration method with additional mass

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2024 - Springer
A vibration test to measure the mass of a specimen without weighing it using the difference
between the resonance frequency with an additional mass and that without it (vibration …

Application of the vibration method with additional mass to timber guardrail beams

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2018 - Springer
This study examined whether or not weight, density, and Young's modulus can be accurately
measured by vibration test without weighing beams for timber guardrails. Bending vibration …

Practical techniques for the vibration method with additional mass: bending vibration generated by tapping cross section

Y Kubojima, S Sonoda, H Kato - Journal of wood science, 2018 - Springer
This work examines the effect of a method for generating bending vibration on the accuracy
of a nondestructive and simple estimation of weight, density, and Young's modulus through …

Practical techniques for the vibration method with additional mass: effect of specimen moisture content

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2017 - Springer
This work examines the effect of moisture content on the accuracy of nondestructively and
simply estimating weight, density, and Young's modulus by a vibration test without …

Application of a bending vibration method without weighing specimens to the practical wooden members conditions

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2022 - Springer
A vibration test to measure the mass of a specimen without weighing it using the difference
between the resonance frequency with an additional mass and that without it (vibration …

Effect of shear and rotatory inertia on the bending vibration method without weighing specimens

Y Kubojima, S Sonoda, H Kato, M Harada - Journal of Wood Science, 2020 - Springer
This study examines the effect of shear and rotatory inertia on the accuracy of the vibration
method with additional mass (VAM). Bending vibration tests were performed for rectangular …

Mass of piled lumber estimated through vibration test

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2020 - Springer
The aim of this study is to propose a method for measuring the mass of wood lumber in piles
through a vibration test. Air-dried sitka spruce (Picea sitchensis Carr.) pieces with 1500 …

Use of cut specimen pieces in the vibration method with additional mass (VAM)

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2019 - Springer
The objective of this study was to increase the estimation accuracy of the vibration method
with additional mass (VAM). The wood specimen was divided into a cut end and a main …

Measuring density and Young's modulus of a log through the vibration test without measuring its weight

Y Kubojima, S Sonoda, H Kato - Journal of Wood Science, 2021 - Springer
This study examines a simple estimation method for the measurement of the mass of an on-
site log through a vibration test. In this method, rather than the log itself, a cut end portion is …

Mass estimation of piled round bars through vibration tests.

Y Kubojima, S Sonoda, H Kato - 2021 - cabidigitallibrary.org
A simple method was developed to estimate the mass of each piled round bar using a
vibration test. Specimens used in the tests were Japanese cedar (Cryptomeria japonica D …