Reducing Packaging Damage: Resting Orientations and Shape Categorization of Dry Red Chilies
摘要
Efficient packing of dry red chilies requires determining their natural resting orientation to reduce damage of packaging material and chili, thereby enhancing operational efficiency. This study employs both theoretical and experimental methods to identify the most probable resting positions of chilies. Theoretical approaches include the Stability Method, Centroid Solid Angle (CSA), and Critical Solid Angle (CRSA) methods, were used to calculate the probabilities of different orientations based on parameters such as contact area, centroid solid angle, and height of the center of gravity. These were complemented by drop tests, an experimental method that identifies natural resting orientations by observing the positions chilies adopt after being dropped from various heights. The chilies were categorized into four groups (A, B, C, and D) based on their shape and geometry, ranging from straight to highly irregular, such that the chili falls under the category of group A has 3 possible orientations, and other 3 groups possess 4 possible orientations, moreover when the stalk or tip touches the ground it comes under orientation 1 and 2 respectively. Orientation 3 and 4 occurs when the chili exhibits circumferential contact with the ground. Additionally, when the tip touches the ground, it becomes orientation 4 for group B, C and orientation 3 for group D or else it will be orientation 3 for group B, C and orientation 4 for group D. Results from both theoretical calculations and experimental trials were consistent. Group A showed Orientation 3 as the most probable natural resting position with the probability of 0.87, while Orientation 4 emerged as the dominant orientation for Groups B, C, and D with the probability of 0.71, 0.64 and 0.69 respectively. These findings are essential for designing an efficient packaging system which results in reducing misalignment of chili and not allow the specific chili orientation that will tear the package material while packing.