Experimental analysis of damage propagation in riveted CFRP-steel structures by thermal loads

This paper focuses on the description of damage propagation around rivets in multiple joined single lap carbon fiber reinforced plastics (CFRP)-steel structures due to loads as a consequence of different coefficients of thermal expansion. Materials and rivets were chosen according to automotive body...

Full description

Saved in:
Bibliographic Details
Published in:International journal of advanced manufacturing technology 2014-11, Vol.75 (5-8), p.1103-1113
Main Authors: Wagner, Julia, Wilhelm, Maximilian, Baier, Horst, Füssel, Uwe, Richter, Thomas
Format: Article
Language:English
Subjects:
Algorithms
Automobile industry
Automotive bodies
Automotive engineering
CAE) and Design
Carbon fiber reinforced plastics
Computer-Aided Engineering (CAD
Damage assessment
Damage detection
Engineering
Image classification
Image detection
Industrial and Production Engineering
Mechanical Engineering
Media Management
Original Article
Piercing
Polymers
Propagation
Reinforced plastics
Riveted joints
Riveting
Rivets
Steel structures
Structural steels
Tension tests
Thermal analysis
Thermal expansion
Ultimate loads
Ultrasonic testing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper focuses on the description of damage propagation around rivets in multiple joined single lap carbon fiber reinforced plastics (CFRP)-steel structures due to loads as a consequence of different coefficients of thermal expansion. Materials and rivets were chosen according to automotive body shop applications. Specimens were evaluated non-destructively in ultrasonic C-scans to characterize damage behavior of blind and self-piercing rivets in CFRP-steel-connections before and after the application of thermal loads. An algorithm for an automated detection of damage size on ultrasonic C-scan images was developed as the basis for further damage classification. The results show that blind riveting (BR) causes crack-like initial damage that broadens to roundish plane defects due to heating. Initial extensive damage due to self-piercing riveting (SPR) propagates in elliptic shape. Additionally, tension tests revealed a loss in ultimate load by 10–15 % induced by thermal loads and associated with damage propagation. A correlation between initial damage, relative displacement, and thermal loads was observed.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-014-6197-5