Application of Moire technique on strain analysis in farm machinery elements

作者：Cardoso Kelen Cristiane^*; Gazzola Jonathan; Dal Fabbro Inacio Maria

来源：Revista Ciencia Agronomica, 2014, 45(3): 479-487.

DOI：10.1590/s1806-66902014000300007

• Photomechanical techniques
• Hybrid methods
• Shadow moire

Development and optimization of projects for agricultural machinery involve the analysis of stress and strain. Moire photomechanical techniques provide a complete displacement field of the specimen under test, and can aid in understanding the mechanical behavior of parts with complex geometry. Hybrid methods combine fringe patterns of displacement with distribution maps of stress and strain through concepts of the theory of elasticity. The objective of this work was to analyse the use of the shadow moire technique in the qualitative determination of stress and strain distribution in geometrically complex machine elements. The results were compared with those from an electrical extensometer and a computer simulation. The results demonstrated that the shadow moire technique was quite reliable in analysing the mechanical behavior of geometrically complex machine elements.

• 出版日期2014-9