Research Article
Investigation on Damping Capability of Indigenous Wood Species in Ethiopia
@INPROCEEDINGS{10.1007/978-3-030-80618-7_22, author={Fasikaw Kibrete and Hailu Shimels}, title={Investigation on Damping Capability of Indigenous Wood Species in Ethiopia}, proceedings={Advances of Science and Technology. 8th EAI International Conference, ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020, Proceedings, Part II}, proceedings_a={ICAST PART 2}, year={2021}, month={7}, keywords={Damping capacity Logarithmic decrement Natural frequency Vibration Wood}, doi={10.1007/978-3-030-80618-7_22} }- Fasikaw Kibrete
Hailu Shimels
Year: 2021
Investigation on Damping Capability of Indigenous Wood Species in Ethiopia
ICAST PART 2
Springer
DOI: 10.1007/978-3-030-80618-7_22
Abstract
Damping capacity is a measure of a material's ability which absorb vibration energy by converting into heat energy. Materials which have high damping ability can suppress excessive vibrations to a reasonable limit. Therefore, this paper investigates the damping characteristics of five indigenous wood species (Cordia Africana, Juniperus Procera, Afrocarpus Gracilior, Syzygium GuineenseandAcacia Decurrens) found in Ethiopia through analytical, numerical and experimental approaches. The experimental testing was performed using piezoelectric accelerometer in association with LabVIEW for a perfectly clamped-free cantilever beam based on the impact hammer excitation. The damping ratio was computed using logarithmic decrement method from the decay curve measured. Based on the investigation, the damping factor for all species of woods was almost equal to 0.020 at room condition, and it is definitely greater than most other crystalline materials. Thus, wooden materials are better suitable for engineering applications in terms of vibrations if the other strength properties are satisfactory.
