TY - JOUR
T1 - Deconsolidation of C/PEEK blanks
T2 - On the role of prepreg, blank manufacturing method and conditioning
AU - Slange, T.K.
AU - Warnet, L.L.
AU - Grouve, W.J.B.
AU - Akkerman, R.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - The combination of rapid automated lay-up and stamp forming has great potential for rapid manufacturing of lightweight load carrying components of thermoplastic composites. However, deconsolidation during blank heating is currently limiting the applicability of rapid lay-up blanks. This experimental work investigates the origin of deconsolidation in blanks produced by advanced fiber placement (AFP) versus traditional press consolidation. The influence of moisture on deconsolidation is investigated through deconsolidation experiments in a convection oven, as well as thermo-mechanical and residual gas analyses. The experiments revealed that thermal expansion of dissolved moisture is the main deconsolidation mechanism for press-consolidated blanks, but not for AFP blanks, which are suggested to deconsolidate mainly due to the release of frozen-in fiber stresses present in the used prepreg.
AB - The combination of rapid automated lay-up and stamp forming has great potential for rapid manufacturing of lightweight load carrying components of thermoplastic composites. However, deconsolidation during blank heating is currently limiting the applicability of rapid lay-up blanks. This experimental work investigates the origin of deconsolidation in blanks produced by advanced fiber placement (AFP) versus traditional press consolidation. The influence of moisture on deconsolidation is investigated through deconsolidation experiments in a convection oven, as well as thermo-mechanical and residual gas analyses. The experiments revealed that thermal expansion of dissolved moisture is the main deconsolidation mechanism for press-consolidated blanks, but not for AFP blanks, which are suggested to deconsolidate mainly due to the release of frozen-in fiber stresses present in the used prepreg.
KW - Residual/internal stress
KW - Moisture
KW - Deconsolidation
KW - Advanced fiber placement (AFP)
UR - http://www.scopus.com/inward/record.url?scp=85050637029&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2018.06.034
DO - 10.1016/j.compositesa.2018.06.034
M3 - Article
AN - SCOPUS:85050637029
SN - 1359-835X
VL - 113
SP - 189
EP - 199
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -
