Long-Exposure RGB Photography with a Fixed Stand for the Measurement of a Trajectory of a Dynamic Impact Device in Real Scale

Abstract

The present manuscript proposes a novel method for the measurement of a trajectory of a falling impact hammer in the dynamic loading of conveyor belts and the determination of their impact resistance. The proposed method has been experimentally tested and the results of the measurements are presented in this manuscript. The proposed method is based on the long-exposure photography with a long-duration opened shutter of the Nikon D5000 DSLR camera. Results of the experimental research were compared with direct reference measurements performed using the L-GAGE LT3 laser distance sensor. Differences between values, obtained by the new method and by the reference measurements were up to ±3 mm. The standard deviation identified in all the experiments was 1 mm.

Development of an Active Training Method for Belt Conveyor

“…In world literature [ 1 , 2 , 3 ], the topic of utility of conveyor belts has been widely discussed. Their numerous advantages were emphasized, such as high reliability [ 4 , 5 , 6 ] and the ease of adapting the conveyor belt’s route to a terrain with rich topography [ 7 , 8 , 9 ]. Another group of advantages includes, among others, continuity of transport, simple structure and relatively low energy consumption [ 10 , 11 , 12 ].…”

Dynamic Model of Impact Energy Absorption by a Conveyor Belt in Interaction with the Support System

“…A standard laboratory method for measuring dynamic properties is, for example, measuring the vibration-damping properties of composite materials, including conveyor belts [10]. Various testing devices have been constructed to facilitate laboratory testing of the dynamic impact process; for example, the test equipment at the Technical University of Wroclaw [11] or the test equipment at the Technical University of Košice, which uses a laser distance sensor to measure a trajectory of the falling load [12]. Laboratory research into punctures in steel-cord conveyor belts was carried out by many others, including authors of papers [13] and [14], who have developed a magnetic high-resolution diagnostic device for steel cord conveyor belts.…”

“…Loading of carrying idlers used in belt conveyors was investigated by the authors of paper [19], and an analysis of failures of idlers based on the measurements conducted during their operation was discussed in [20]. Sensors have become crucial components in identification of conveyor belt damage [3,12,21]. The authors in [21] developed a sensor system for the detection of stones and an automatic system for bulk materials for monitoring conveyor belt damage.…”

“…Kovanic et al proposed a method of measuring an impactor trajectory during the dynamic impact load using a laser distance sensor L-GAGE and experimental photography. This method has been experimentally tested and the results of the measurements were presented in publication [12]. Blažej et al developed a magnetic sensor for monitoring steel-cord conveyor belts [3].…”