Testrigg : för säkerhetsklassificerade skjutluckor på Svalson AB

• Main Author: Öhman, Christina
• Format: Others
• Language: Swedish
• Published: Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik 2020
• Subjects: Mechanical Engineering; Maskinteknik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79413

On behalf of Svalson AB, a requirement specification and a concept for a test rig that can be used for product tests of burglar-proof sliding windows are produced. The classification to be achieved is Resistance Class (RC) 3. According to the standard SS EN-1627 with associated sub-standards there are three relevant test methods to classify this sort of product. These refer to static loading, dynamic loading and manual burglary attempts. The test rig is manufactured in such a way that all tests can be performed on the same rig. It should also be capable of withstanding a load of 15 kN without deforming more than 5 mm. After setting up a plan for the project and gathering information, the project continues by developing different concepts of such a test rig. A requirement specification has been prepared in consultation with supervisor Johan Lyckestig and staff at Svalson as well as an external adviser at RISE. The concepts are weighted against this requirement specification and the concept with the highest score is optimized in terms of strength, weight and manufacturing cost. The concept that shows the most potential is made up of several modules that is mounted on a small, solid floor stand. The modules can be adjusted so that the frame holds objects of dimensions from 740 x 1020 to 1340 x 1870 mm. The optimization is done by analyzing the model with FEM in Solidworks and then modifying the areas that shows weaknesses or prove to be overdimensioned. After optimization, new analyzes show that the test rig meets the targets for maximum deformation at 15 kN load, while reducing the total weight by 158 kg. The final construction is estimated to weigh 283 kg. The analyzes should be taken as a clue and no exact reflection of reality. The actual possible deformation in subsequent product tests is difficult to predict, but everything indicates that the test rig should be able to withstand the stresses that it may be subject to in future product tests.