This study addresses the impact performances of recyclable composites made of all thermoplastic polymer-fiber-reinforced plastics (PFRPs), where the reinforcing fibers and matrix are made of thermoplastic polymers. Three woven PFRPs systems were evaluated, including polypropylene fibers, polypropylene matrix, and high-density polyethylene matrix. In low-velocity impact scenario with an impactor speed of less than 6 m/s, our results demonstrate the energy absorption capabilities of the flat laminate PFRPs compared to woven carbon fiber-reinforced plastics (CFRPs) and aluminum alloy 5052. For the systems studied, the PFRPs can reach the specific energy absorption 89% to 115% of the CFRPs. Even compared with the aluminum alloy 5052, the PFRPs can reach up to 97%. We investigate the failure morphologies of the PFRPs using X-ray µCT scans. They reveal the PFRPs’ unique ductile failure morphologies compared to common CFRPs. In addition, we heal the perforated region in the PFRPs by applying the manufacturing process identical to the initial curing process. The healed panels are perforated again, and they recovered 30% to 38% of their original specific energy absorption, a recovery not achievable with CFRPs. This study provides valuable experimental results, and concrete insights into the potential applications of recyclable PFRPs in various engineering fields. It emphasizes their excellent energy-absorbing capability and repairability.
HubbeM. Sustainable composites: a review with critical questions to guide future initiatives. Sustainability2023; 15(14): 11088. DOI: 10.3390/su151411088.
2.
FantuzziNBacciocchiMBenedettiD, et al.The use of sustainable composites for the manufacturing of electric cars. Composites Part C: Open Access2021; 4: 100096. DOI: 10.1016/j.jcomc.2020.100096.
3.
LiYFChenWChengTW. The sustainable composite materials in civil and architectural engineering. Sustainability2022; 14(4): 2134. DOI: 10.3390/su14042134.
4.
KanbargiNHoskinsDGuptaS, et al.A renewable lignin-based thermoplastic adhesive for steel joining. Eur Polym J2023; 189: 111981. DOI: 10.1016/j.eurpolymj.2023.111981.
5.
ArockiamNJJawaidMSabaN. Sustainable bio composites for aircraft components. In: JawaidMThariqM (eds) Sustainable Composites for Aerospace Applications. Woodhead Publishing Series in Composites Science and Engineering. Cambridge, UK: Woodhead Publishing, 2018, pp. 109–123.
6.
DanielIIshaiO. Engineering mechanics of composite materials. 2nd ed. Oxford, UK: Oxford University Press, 2005.
7.
QiaoYDeleoAASalviatoM. A study on the multi-axial fatigue failure behavior of notched composite laminates. Compos Appl Sci Manuf2019; 127: 105640. DOI: 10.1016/j.compositesa.2019.105640.
8.
QiaoYSalviatoM. Micro-computed tomography analysis of damage in notched composite laminates under multi-axial fatigue. Compos B Eng2020; 187: 107789. DOI: 10.1016/j.compositesb.2020.107789.
9.
MaQRejabMSiregarJ, et al.A review of the recent trends on core structures and impact response of sandwich panels. J Compos Mater2021; 55(18): 2513–2555. DOI: 10.1177/0021998321990734.
10.
KaruppannanGKärkiT. A review on the recycling of waste carbon fibre/glass fibre-reinforced composites: fibre recovery, properties and life-cycle analysis. SN Appl Sci2020; 2: 443. DOI: 10.1007/s42452-020-2195-4.
11.
OliveuxGDandyLOLeekeGA. Current status of recycling of fibre reinforced polymers: review of technologies, reuse and resulting properties. Prog Mater Sci2015; 72: 61–99. DOI: 10.1016/j.pmatsci.2015.01.004.
12.
YangYBoomRIrionB, et al.Recycling of composite materials. Chem Eng Process: Process Intensif2012; 51: 53–68. Delft Skyline Debate. DOI: 10.1016/j.cep.2011.09.007.
13.
NakagawaTKoSSlaughterC, et al.Effects of aging on the mechanical and fracture properties of chopped fiber composites made from repurposed aerospace prepreg scrap and waste. Sustainable Materials and Technologies2022; 33: e00470. DOI: 10.1016/j.susmat.2022.e00470.
14.
QiaoYFringLDPallakaMR, et al.A review of the fabrication methods and mechanical behavior of continuous thermoplastic polymer fiber–thermoplastic polymer matrix composites. Polym Compos2023; 44(2): 694–733. DOI: 10.1002/pc.27139.
15.
KissPStadlbauerWBurgstallerC, et al.In-house recycling of carbon- and glass fibre-reinforced thermoplastic composite laminate waste into high-performance sheet materials. Compos Appl Sci Manuf2020; 139: 106110. DOI: 10.1016/j.compositesa.2020.106110.
16.
PegorettiA. Towards sustainable structural composites: a review on the recycling of continuous-fiber-reinforced thermoplastics. Advanced Industrial and Engineering Polymer Research2021; 4(2): 105–115. Recycling of Polymer Blends and Composites.
17.
QiaoYPallakaMRNickersonEK, et al.Understanding the elastic, plastic, and damage features in fracturing of self-reinforced thermoplastic composites via non-destructive digital imaging correlation. In: Proc. SPIE 12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI, Long Beach, LA, USA. 28 April 2022. p. 1204707.
18.
RomhányGWuCLaiW, et al.Fracture behavior and damage development in self-reinforced pet composites assessed by located acoustic emission and thermography: effects of flame retardant and recycled pet. Compos Sci Technol2016; 132: 76–83. DOI: 10.1016/j.compscitech.2016.06.014.
19.
WrightDDLautenschlagerEPGilbertJL. Bending and fracture toughness of woven self-reinforced composite poly(methyl methacrylate). J Biomed Mater Res1997; 36(4): 441–453. DOI: 10.1002/(SICI)1097-4636(19970915)36:4-441::AID-JBM2-3.0.CO;2-E.
20.
KoSQiaoYRoosendaalT, et al.Low-velocity repeated impact behaviors of polymer fiber reinforced plastics (pfrps). In: The American Society for Composites (ASC) 38th Annual Technical Conference. Boston, MA, 20 September 2023.
21.
KoSQiaoYRamosJ, et al.Low-velocity repeated impact behaviors of polymer fiber reinforced plastics (pfrps). In: SAMPE Conference. Seattle, WA, November 2023.
22.
BárányTIzerAKarger-KocsisJ. Impact resistance of all-polypropylene composites composed of alpha and beta modifications. Polym Test2009; 28(2): 176–182. DOI: 10.1016/j.polymertesting.2008.11.011.
23.
AbrahamTWanjaleSBárányT, et al.Tensile mechanical and perforation impact behavior of all-pp composites containing random pp copolymer as matrix and stretched pp homopolymer as reinforcement: effect of β nucleation of the matrix. Compos Appl Sci Manuf2009; 40(5): 662–668. DOI: 10.1016/j.compositesa.2009.03.001.
24.
IzerABárányTVargaJ. Development of woven fabric reinforced all-polypropylene composites with beta nucleated homo- and copolymer matrices. Compos Sci Technol2009; 69(13): 2185–2192. Smart Composites and Nanocomposites Special Issue with Regular Papaers. DOI: 10.1016/j.compscitech.2009.06.002.
25.
Karger-KocsisJWanjaleSAbrahamT, et al.Preparation and characterization of polypropylene homocomposites: exploiting polymorphism of pp homopolymer. J Appl Polym Sci2010; 115(2): 684–691. DOI: 10.1002/app.30624.
26.
McMahonSBertolloNCearbhaillE, et al.Bio-resorbable polymer stents: a review of material progress and prospects. Prog Polym Sci2018; 83: 79–96. DOI: 10.1016/j.progpolymsci.2018.05.002.
27.
AlcockBCabreraNBarkoulaN, et al.Low velocity impact performance of recyclable all-polypropylene composites. Compos Sci Technol2006; 66(11): 1724–1737. DOI: 10.1016/j.compscitech.2005.11.010.
28.
SantosRGorbatikhLSwolfsY. Commercial self-reinforced composites: a comparative study. Compos B Eng2021; 223: 109108. DOI: 10.1016/j.compositesb.2021.109108.
29.
LiuLHuDWanD, et al.Low velocity impact behavior and simulation of parametric effect analysis for uhmwpe/lldpe thermoplastic composite laminates. Compos Struct2021; 258: 113180. DOI: 10.1016/j.compstruct.2020.113180.
30.
LinSWaasA. An experimental and computational study on the low velocity impact-induced damage of a highly anisotropic laminated composite panel. J Appl Mech2021; 88(8): 081001.
31.
LinSWaasA. The effect of stacking sequence on the lvi damage of laminated composites; experiments and analysis. Compos Appl Sci Manuf2021; 145: 106377. DOI: 10.1016/j.compositesa.2021.106377.
32.
AurrekoetxeaJAgirregomezkortaAAretxagaG, et al.Impact behavior of carbon fiber/epoxy composite manufactured by vacuum-assisted compression resin transfer molding. J Compos Mater2012; 46(1): 43–49. DOI: 10.1177/0021998311401938.
33.
WangJWaasAWangH. Experimental and numerical study on the low-velocity impact behavior of foam-core sandwich panels. Compos Struct2013; 96: 298–311. DOI: 10.1016/j.compstruct.2012.09.002.
34.
FloresMMollenhauerDRunatungaV, et al.High-speed 3d digital image correlation of low-velocity impacts on composite plates. Compos B Eng2017; 131: 153–164. DOI: 10.1016/j.compositesb.2017.07.078.
35.
NguyenMElderDBayandorJ, et al.A review of explicit finite element software for composite impact analysis. J Compos Mater2005; 39(4): 375–386. DOI: 10.1177/0021998305046739.
36.
EllisonAKimH. Shadowed delamination area estimation in ultrasonic c-scans of impacted composites validated by x-ray ct. J Compos Mater2020; 54(4): 549–561. DOI: 10.1177/0021998319865311.
37.
JiKKimS. Dynamic direct numerical simulation of woven composites for low-velocity impact. J Compos Mater2007; 41(2): 175–200. DOI: 10.1177/0021998306063360.
38.
MeyerLSchulteKGrove-NielsenE. Cfrp-recycling following a pyrolysis route: process optimization and potentials. J Compos Mater2009; 43(9): 1121–1132. DOI: 10.1177/0021998308097737.
39.
RenYXuLShangX, et al.Evaluation of mechanical properties and pyrolysis products of carbon fibers recycled by microwave pyrolysis. ACS Omega2022; 7(16): 13529–13537. DOI: 10.1021/acsomega.1c06652.
40.
HaoCLiuTLiuW, et al.Recyclable cfrps with extremely high tg: hydrothermal recyclability in pure water and upcycling of the recyclates for new composite preparation. J Mater Chem A2022; 10: 15623–15633. DOI: 10.1039/D2TA03161B.
41.
MaYNuttS. Chemical treatment for recycling of amine/epoxy composites at atmospheric pressure. Polym Degrad Stabil2018; 153: 307–317. DOI: 10.1016/j.polymdegradstab.2018.05.011.
42.
KoSDaveyJDouglassS, et al.Effect of the thickness on the fracturing behavior of discontinuous fiber composite structures. Compos Appl Sci Manuf2019; 125: 105520. DOI: 10.1016/j.compositesa.2019.105520.
43.
KoSNakagawaTChenZ, et al.Effects of average number of platelets through the thickness and platelet width on the mechanical properties of discontinuous fiber composites. Compos Appl Sci Manuf2024; 177: 107945. DOI: 10.1016/j.compositesa.2023.107945.
44.
KoSYangJTuttleM, et al.Effect of the platelet size on the fracturing behavior and size effect of discontinuous fiber composite structures. Compos Struct2019; 227: 111245. DOI: 10.1016/j.compstruct.2019.111245.
45.
VincentGAde BruijnTAWijskampS, et al.Shredding and sieving thermoplastic composite scrap: method development and analyses of the fibre length distributions. Compos B Eng2019; 176: 107197. DOI: 10.1016/j.compositesb.2019.107197.
46.
KimHJKimHSLeeGY, et al.Three-dimensional carbon fiber composite printer for cfrp repair. Compos B Eng2019; 174: 106945. DOI: 10.1016/j.compositesb.2019.106945.
47.
DaviesPCantwellWKauschH. Healing of cracks in carbon fibre-peek composites. J Mater Sci Lett1989; 8: 1247–1248. DOI: 10.1007/BF00721480.
48.
ReyesGSharmaU. Modeling and damage repair of woven thermoplastic composites subjected to low velocity impact. Compos Struct2010; 92(2): 523–531. DOI: 10.1016/j.compstruct.2009.08.038.
49.
ThornTDLiuYYaoX, et al.Smart and repeatable easy-repairing and self-sensing composites with enhanced mechanical performance for extended components life. Compos Appl Sci Manuf2023; 165: 107337. DOI: 10.1016/j.compositesa.2022.107337.
50.
D7136 ASTM D7136/D7136M-20. Standard test method for measuring the damage resistance of a fiber-reinforced polymer matrix composite to a drop-weight impact event2020.
51.
FidanSSınmazçelikTAvcuE. Internal damage investigation of the impacted glass/glass+ aramid fiber reinforced composites by micro-computerized tomography. NDT E Int2012; 51: 1–7.
52.
LiuLHuDWanD, et al.Low velocity impact behavior and simulation of parametric effect analysis for uhmwpe/lldpe thermoplastic composite laminates. Compos Struct2021; 258: 113180.
53.
AurrekoetxeaJSarrionandiaMMateosM, et al.Repeated low energy impact behaviour of self-reinforced polypropylene composites. Polym Test2011; 30(2): 216–221.
54.
BoriaSScattinaABelingardiG. Impact behavior of a fully thermoplastic composite. Compos Struct2017; 167: 63–75.
55.
OlgunM. Effects of polypropylene fiber inclusion on the strength and volume change characteristics of cement-fly ash stabilized clay soil. Geosynth Int2013; 20(4): 263–275. DOI: 10.1680/gein.13.00016.
56.
BoriaS. Lightweight design and crash analysis of composites. In: NjugunaJ (ed) Lightweight Composite Structures in Transport. Cambridge, UK: Woodhead Publishing, 2016, pp. 329–360.
57.
SelaNIshaiO. Interlaminar fracture toughness and toughening of laminated composite materials: a review. Composites1989; 20(5): 423–435. DOI: 10.1016/0010-4361(89)90211-5.
58.
JerjenIRevolVBrunnerAJ, et al.Detection of stress whitening in plastics with the help of x-ray dark field imaging. Polym Test2013; 32(6): 1094–1098. DOI: 10.1016/j.polymertesting.2013.06.008.
59.
QiaoYKoSRamosJ, et al. Effects of Processing Temperature, Pressure, and Fiber Volume Fraction on Mechanical and Morphological Behaviors of Fully-recyclable Unidirectional Thermoplastic Polymer-fiber-reinforced Polymers. Composites Part C: Open Access. 2024; 14: 100497. https://doi.org/10.1016/j.jcomc.2024.100497
60.
ChandranMPadmanabhanK. Microbond fibre bundle pullout technique to evaluate the interfacial adhesion of polyethylene and polypropylene self reinforced composite. Appl Adhes Sci2019; 7: 5. DOI: 10.1186/s40563-019-0121-z.
61.
SiviourCJordanJ. High strain rate mechanics of polymers: a review. J dynamic behavior mater2016; 2: 15–32. DOI: 10.1007/s40870-016-0052-8.
62.
SevkatELiawBDelaleF, et al.Effect of repeated impacts on the response of plain-woven hybrid composites. Compos B Eng2010; 41(5): 403–413. DOI: 10.1016/j.compositesb.2010.01.001.
63.
WaasAMThorssonSIRassaianM. Prediction of low-velocity face-on impact response and compression after impact (cai) of composite laminates using est and cohesive modeling (dczm). In: 2018 AIAA/ASCE/AHS/ASC structures, structural dynamics, and materials conference, Kissimmee, Florida, 8–12 January 2018, p. 1704.
64.
LiuHFalzonBGTanW. Experimental and numerical studies on the impact response of damage-tolerant hybrid unidirectional/woven carbon-fibre reinforced composite laminates. Compos B Eng2018; 136: 101–118.
65.
GonzálezEMaimíPCamanhoP, et al.Simulation of drop-weight impact and compression after impact tests on composite laminates. Compos Struct2012; 94(11): 3364–3378.
