Flexural Vibration Test Method for Determining the Dynamic Elastic Modulus of Full-Size Strawboards for Use in Transportation Framed Cases

Authors

  • Xiaoyu Gu College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
  • Qiyun Xu College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
  • Benjamin Mwamba College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Zheng Wang College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
  • Liang Qi College of Mechatronic Engineering, Nanjing Forestry University, Nanjing, 210037, China
  • Jun Wang College of Information Science and Technology, Nanjing Forestry University, Nanjing, 210037, China
  • Liming Song Zhejiang Jindi Holding Group Co., Ltd, Hangzhou, 310000
  • Jinliang Wu Huaian Jin Li Da Packaging Co., Ltd, Huaian, 223001

Keywords:

Strawboard, Framed case, Elastic modulus, Dynamic testing, Triangular prisms support

Abstract

This paper proposes an improvement in the test method for determining the flexural dynamic modulus of elasticity of strawboard with two triangular prisms as supports, for quality control and classification. Free-plate modal and free-plate transient excitation methods were used to test the elastic modulus of 1/4-plate and whole-plate strawboards. The dynamic test results were verified with the four-point bending method and tensile method. The results show that the elastic moduli of strawboards is approximately 2 GPa.  The dynamic test method proposed is efficient, simple, repeatable, and accurate. This method is more suitable for factory applications than existing dynamic testing methods. The framed cases produced by the strawboard all meet the performance requirements in GB/T 7284 (2016).

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Published

2024-04-04 — Updated on 2024-04-05

Issue

Vol. 19 No. 2 (2024)

Section

Research Article or Brief Communication