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A Relationship between the Fracture Strength and the Fracture Surface Markings of Brittle Plastic Plates

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 33 Issue 1 Page 39-46
published_at 1982
KJ00000156436.pdf
[fulltext] 828 KB
Title
プラスチック板材の脆性破壊強度と破面模様について
A Relationship between the Fracture Strength and the Fracture Surface Markings of Brittle Plastic Plates
Creators Takimoto Akio
Creators Furuumi Sumihiko
Creators Kuniki Nobuo
Creators Matsukuma Kouichi
Creators Yoshimura Kenji
Source Identifiers
An experimental relationship between the fracture strength and the parabola marking density on the fracture surface has been investigated on the plate material of the unsaturated polyester resin. Fracture tests were conducted both on mild notch tensile specimens and on single edge notch impact specimens having the arbitrary notch depth and radius. The fracture strength in tension decreases with the length to width ratio in the outside loading method and increases with that in the inside loading method. The fracture energy decreases in different degrees in each method of loading. The parabola marking density on the fracture surface increases as the fracture strength increases in tension. The fracture energy and the parabola marking density increase with the decreases in the notch depth and/or sharpness in Charpy impact tests. Consequently, the parabola marking density increases with the increases in the fracture strength and energy both in tension and impact tests. The results are discussed on the energy point of view by using the analytical fracture markings and reasonable conclusion is drawn.
Subjects
材料工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1982
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部