TY - GEN
T1 - Impact of the abrasive water jet milling process on the damage and surface characteristics of CFRP composite
AU - Hejjaji, Akshay
AU - Zitoune, Redouane
AU - Crouzeix, Laurent
AU - Collombet, Francis
AU - Le Roux, Sabine
N1 - Publisher Copyright:
© 2016, European Conference on Composite Materials, ECCM. All rights reserved.
PY - 2016
Y1 - 2016
N2 - Milling by Abrasive Water Jet (AWJ) is a novel process introduced recently, which can potentially be used for repairing composite structures. It is a promising technique when compared to conventional machining which has inherit problems like extensive damage and dust generation. Till now material integrity of the composite structures machined by AWJ process are not well investigated. In the present work, influence of AWJ milling parameters on the surface characteristics and size of damage (craters) are investigated for carbon/epoxy composite specimens using full experimental design. The surface quality was characterized by 2D Profilometry, 3D optical topography and Scanning Electron Microscopy (SEM) observation. In addition, surface topologies were analyzed to obtain roughness parameters and crater volume, which were correlated with machining parameters. SEM images reveal the presence of damages (in the form of craters, ridges, broken fibers and embedded abrasive particles in matrix) whose size is strongly influenced by the machining parameters. It is seen that the average crater volume increases by 350% when pressure varies from 80 MPa to 140MPa. ANOVA technique indicates that surface roughness and crater volume are highly influenced by jet pressure and formation of ridges is influenced by scan step compared to other parameters.
AB - Milling by Abrasive Water Jet (AWJ) is a novel process introduced recently, which can potentially be used for repairing composite structures. It is a promising technique when compared to conventional machining which has inherit problems like extensive damage and dust generation. Till now material integrity of the composite structures machined by AWJ process are not well investigated. In the present work, influence of AWJ milling parameters on the surface characteristics and size of damage (craters) are investigated for carbon/epoxy composite specimens using full experimental design. The surface quality was characterized by 2D Profilometry, 3D optical topography and Scanning Electron Microscopy (SEM) observation. In addition, surface topologies were analyzed to obtain roughness parameters and crater volume, which were correlated with machining parameters. SEM images reveal the presence of damages (in the form of craters, ridges, broken fibers and embedded abrasive particles in matrix) whose size is strongly influenced by the machining parameters. It is seen that the average crater volume increases by 350% when pressure varies from 80 MPa to 140MPa. ANOVA technique indicates that surface roughness and crater volume are highly influenced by jet pressure and formation of ridges is influenced by scan step compared to other parameters.
KW - Abrasive water jet milling
KW - Machining damage
KW - Surface topography
UR - http://www.scopus.com/inward/record.url?scp=85018562527&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85018562527
T3 - ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
BT - ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
PB - European Conference on Composite Materials, ECCM
T2 - 17th European Conference on Composite Materials, ECCM 2016
Y2 - 26 June 2016 through 30 June 2016
ER -