Evaluation of spatial pressure distribution during ice-structure interaction using pressure indicating film

• Main Authors: Hyunwook Kim, Christopher Ulan-Kvitberg, Claude Daley
• Format: Article
• Language: English
• Published: Elsevier 2014-09-01
• Series: International Journal of Naval Architecture and Ocean Engineering
• Subjects: Ice crushing test; ‘Spatial’ pressure-area curve; ‘Process’ pressure-area curve; Pessure-idicating flm (PIF); Stepped crushing method, ‘Contour-averaging’ method (CAM); ‘Square-averaging’ method (SAM)
• Online Access: http://www.sciencedirect.com/science/article/pii/S2092678216301650

Understanding of ‘spatial’ pressure distribution is required to determine design loads on local structures, such as plating and framing. However, obtaining a practical ‘spatial’ pressure distribution is a hard task due to the sensitivity of the data acquisition frequency and resolution. High-resolution Pessure-Idicating Flm (PIF) was applied to obtain pressure distribution and pressure magnitude using stepped crushing method. Different types of PIF were stacked at each test to creating a pressure distribution plot at specific time steps. Two different concepts of plotting ‘spatial’ pressure-area curve was introduced and evaluated. Diverse unit pixel size was chosen to investigate the effect of the resolution in data analysis. Activated area was not significantly affected by unit pixel size; however, total force was highly sensitive.