Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad del Bío Bío
2015
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=48538490002 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- INFLUENCE OF SPECIMEN ORIENTATION ON DETERMINATION OF ELESTICITY IN STATIC BENDING Felipe Hideyoshi Icimoto Fabiane Salles Ferro Diego Henrique de Almeida André Luís Cristoforo Francisco Antônio Rocco Lahr Agrociencias stiffness static bending test Modulus of elasticity Wood is a natural material and so many factors interfere in estimation of its physical and mechanical properties. Consequently variability in properties should be taken into account to rationalize its application. Longitudinal modulus of elasticity is one of the main mechanical properties of the material, and its value can be obtained via standardized tests. The aim of this study is to evaluate the influence of test conditions compatible with ABNT NBR 7190:1997 Code requirements to determine modulus of elasticity in static bending. For each of eight species, eight specimens were tested, all of them four times, with the sample oriented on each of its four faces related to load application. Data analysis was performed independently of species and their respective strength class, using hypothesis testing to evaluate influence of specimens’ orientations to determination. It was concluded that specimen orientation is significant in determining modulus of elasticity in static bending according to ABNT NBR 7190:1997. This aspect can lead to a future normative review by the National Committee responsible by redaction of this Code. To represent natural variability of wood in specimens’ volume by only one bending test, values of the modulus of elasticity should be lessened in 8%. Keywords: 2015 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48538490002 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.2 Vol.17