Test System to Verify Thermal Shock Resistance

Abstract

The article presents the method and the prototype system to verify the resistance of technological objects to environmental impacts in the form of increased or decreased temperatures or sudden temperature changes (i.e. thermal shocks), developed in accordance with the following PN-EN 60068 standard requirements as regards environmental testing: PN-EN 60068-2-1:2009 – Test A: Cold [7]; PN-EN 60068- 2-2:2009 – Test B: Dry heat [8]; and PN-EN 60068-2-14:2009 – Test N: Change of temperature [9]. The developed solution is also aligned with the testing procedure requirements applicable to military equipment tests [12]. The system is mainly designed for testing prototype technological devices subject to significant changes in the temperature of the environment in which they operate, including thermal shocks; it also enables periodic quality checks of manufactured goods [1, 2]. With the developed system the following may be tested: the operation of individual mechanisms; the shape stability and resistance [10]; the resistance to damage; as well as the operability of electronic systems [3]. The flexible method of programming tests used in the system enables the performance of both normative and non-standard tests, depending on the requirements of the research to be carried out. The article describes the system design process, its architecture, structure, and operation, as well as the prototype verification test results. The validated prototype test system was incorporated into the structure of the laboratory for the identification and verification of technical safety of industrial and special-purpose applications under environmental conditions established at the Łukasiewicz Research Network – Institute for Sustainable Technologies (Łukasiewicz–ITEE).

Disposable personal protective equipment vending machine

“…In each row there are six sockets in total (60º rotation). The drum rotates thanks to an electric motor with a shaft (11). Under the drum there is a dispensing chute (12), tilted towards the front wall of the cabinet, through which the purchased product is dispensed from the drum socket to the pickup tray.…”

“…Researchers at the Łukasiewicz Research Network -Institute for Sustainable Technologies (Łukasiewicz-ITeE) conducted studies on controlled distribution, dispensing and transportation of products, bulk and semi-liquid materials, and gases. The research was commissioned by business entities and scientific centres and it led to the development of, among other things, a solution for controlled transportation, quality assurance and selection of goods in a machine industry [14,13,2]; an automated inspection line for glass products [4]; a paint robot and an in-salon hair dye dispenser [8,11]; an erosion testing device (abrasive dispenser) [10]; and a production line for cable insulators (superabsorbent dispenser) [9]. In each of the above-mentioned examples, problems of dispensing, transporting and positioning individual products for the purpose of optical quality control and maintenance, as well as precise metering or continuous dosing of semi-liquid substances and powders were solved.…”