Detection of multiple cracks in beams using vibration characteristics
العناوين الأخرى
الكشف عن الشقوق المتعددة في العوارض عن طريق خصائص الاهتزاز
المؤلف
المصدر
Journal of King Abdulaziz University : Engineering Sciences
العدد
المجلد 28، العدد 1 (30 يونيو/حزيران 2017)، ص ص. 67-90، 24ص.
الناشر
جامعة الملك عبد العزيز مركز النشر العلمي
تاريخ النشر
2017-06-30
دولة النشر
السعودية
عدد الصفحات
24
التخصصات الرئيسية
الملخص EN
A crack is a type of damage that can lead to catastrophic failure when it grows in a structure.
Thus prediction of cracks is a very important problem that has to be addressed.
Some studies have been done on non-destructive techniques to identify cracks.
Research interest in this area has been growing up quickly.
In this study, a beam made of aluminum was used for detecting cracks using vibration characteristics.
A method to identify cracks in an aluminum beam was derived from the equation of the dynamic stiffness.
Rotational springs were used to model the cracks in the beam and the frequency response function was calculated using a spectral element model using Finite Element Model (FEM).
This procedure provides a relationship between the frequency response and crack structure.
The inverse problem was solved repetitively for crack positions and sizes using the Newton-Raphson method.
The finite element model was formulated to simulate the results and to provide vibration overall amplitude measurements.
The results showed at certain crack size, the amplitude increases with increasing crack depth for all crack positions.
At crack size of 12 mm, an increase of 4.5% in amplitude was obtained for 60 mm crack position at a depth of 1.6 mm compared to its value at a depth of 0.16 mm.
Similarly, it was 8.4% at crack size of 16 mm.
Also, the amplitude varies inversely with position.
Furthermore, at certain crack position, the amplitude increases with increasing crack depth for all crack sizes.
At crack position of 75 mm, an increase of 12.6% in amplitude was obtained for 20 mm crack size at a depth of 1.6 mm compared to its value at a depth of 0.16 mm.
Similarly, it was 5.4% at crack position of 150 mm.
Finally, the amplitude increases as crack size increases at a certain depth.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Maatani, Khalid Hazza. 2017. Detection of multiple cracks in beams using vibration characteristics. Journal of King Abdulaziz University : Engineering Sciences،Vol. 28, no. 1, pp.67-90.
https://search.emarefa.net/detail/BIM-926515
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Maatani, Khalid Hazza. Detection of multiple cracks in beams using vibration characteristics. Journal of King Abdulaziz University : Engineering Sciences Vol. 28, no. 1 (2017), pp.67-90.
https://search.emarefa.net/detail/BIM-926515
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Maatani, Khalid Hazza. Detection of multiple cracks in beams using vibration characteristics. Journal of King Abdulaziz University : Engineering Sciences. 2017. Vol. 28, no. 1, pp.67-90.
https://search.emarefa.net/detail/BIM-926515
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 88-89
رقم السجل
BIM-926515
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر