Investigation of Shock Signals from SAE J577 Mechanical Shock Machine

Yıl 2020, Cilt: 4 Sayı: 1, 23 - 29, 31.03.2020

Barış Ediz Erhan Ay Emre Öztürk

https://doi.org/10.30939/ijastech..572497

Cited By: 1

Öz

In this study, acceleration
signals measured from the SAE J577 mechanical shock machine are investigated in
detail. The aim of this investigation is to derive representative standard
acceleration signals to be used as acceleration loads for finite element
fatigue analysis of Automotive Lighting parts. These signals can also be used
as load inputs for vibration shakers which have the capability of driving time
domain signals. First of all, acceleration signals have been measured from the
free machine table and by the help of the signal analysis software, automatic
averaging operation has been performed from the long train of shock signals to
have a single average acceleration shock signal. Furthermore; because the
machine is force controlled, it is understood that the total weight and the
overall dimensions of the device under test (DUT) and the fixture have
significant effect on the severity of the test. Thus, measurements are repeated
from the different sized fixtures and the results are compared in order to
understand the effects of the fixture size and the weight on test severity.

Anahtar Kelimeler

SAE J577; Automotive lighting; Signal averaging; Test fixture

Kaynakça

• Vibration test machine and operation procedure. SAE International.Surface Vehicle Recommended Practice J577™, SEP2015, Revised 2015-09.
• Schrader, CD. 2006. Dynamic structural simulation of the SAE J577 vibration test.SAE Technical Paper Series, doi: 10.4271/2006-01-048.
• Kongying, X. 2007. Automotive light assembly failure detection. MSc Thesis,Department of Mechanical and Materials Engineering, Queen’s University Kingston, Ontario, Canada
• TELLİ ÇETİN, S , EDİZ, B , AY, E , ÇAL, T . (2019). Bir Otomotiv Gündüz Farına Şok Testlerinin Uygulanması Ve Sonlu Elemanlar Metodu İle Doğrulama Çalışmaları. Uludağ University Journal of The Faculty of Engineering, 24 (1), 1-12. DOI: 10.17482/uumfd.418556
• EDİZ,B. 2018. Bir binek araç gündüz farının sonlu eleman modelinin bilgisayarda şok testleri için güncellenmesi ve doğrulanması, Yüksek Lisans Tezi, Uludağ Üniversitesi Makina Mühendisliği Bölümü, Bursa/Türkiye
• Braun, S. 2010. The synchronous (time domain) average revisited. Proceedings of ISMA2010 Including USD2010, Technion City, Haifa, Israel.