Effects of microstructure on crack tip fields and fracture toughness in PC/ABS polymer blends

Seelig, Thomas; Giessen, E. van der

doi:10.1007/s10704-007-9117-y

Cited by 10 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, PC-ABS material tends to lock onto the knife blade to prevent it from being further penetrated, while the knife blade was also difficult to be released from the stabbed specimens. This can be attributed to the fracture toughness and impact resistance of PC-ABS; therefore, higher stab impact energy is required to pierce and deform it as compared to the ABS-M30 [19,20].…”

Section: Resultsmentioning

confidence: 99%

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Maidin¹,

Chong²,

Heing³

et al. 2019

Textile Manufacturing Processes

View full text Add to dashboard Cite

Five designs of imbricate scale armour features for stab-resistant application were printed via fused deposition modelling process. Stab test on these designs against the HOSDB KR1-E1 stab-resistant body armour standard with impact energy of 24 Joules was conducted. The stab test was conducted on a number of samples measured thicknesses ranging from 4.0 to 10.0 mm by using Instron CEAST 9340 Drop Impact Tower to determine a minimum thickness that resulted in a knife penetration through the underside of sample which does not exceed the maximum penetration permissibility of 7.0 mm. Materials used for the samples were ABS-M30 and PC-ABS. Finally, one of the designs which offered the highest knife penetration resistance was selected. The results show that PC-ABS samples provide less shattering and lower overall knife penetration depth in comparison with ABS-M30. PC-ABS stab test demonstrated a minimum thickness of 8.0 mm, which was the most adequate to be used in the development of FDM manufactured body armour design features. Lastly, the design feature of D5 has shown to exhibit the highest resistance to the knife penetration due to the penetration depth of 3.02 mm, which was the lowest compared to other design features.

show abstract

Section: Resultsmentioning

confidence: 99%

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Maidin¹,

Chong²,

Heing³

et al. 2019

Textile Manufacturing Processes

View full text Add to dashboard Cite

show abstract

“…Commercially available PC-based blends can be divided into two main categories. The first group refers to the blends with an addition of styrene polymers, like acrylonitrile-butadiene-styrene (ABS) [1][2][3][4] or acrylonitrile-styrene-acrylate ASA [5,6]. The second category consists of PC and different types of thermoplastic polyesters, out of which polyethylene terephthalate homopolymer (PET) [7][8][9][10] and polybutylene terephthalate PBT [11][12][13] are the most popular.…”

Section: Introductionmentioning

confidence: 99%

Development of Thermal Resistant FDM Printed Blends. The Preparation of GPET/PC Blends and Evaluation of Material Performance

Andrzejewski

Marciniak-Podsadna

2020

Materials

View full text Add to dashboard Cite

The paper discusses the preparation of polymer blends based on the polyethylene terephthalate copolymer/polycarbonate (GPET/PC). Materials have been prepared in order to assess their applicability in the fused deposition modeling (FDM) 3D printing process. The tested key feature was the thermomechanical resistance, measured by head deflection temperature (HDT) and Vicat softening temperature (VST), the mechanical tests and dynamic mechanical thermal analysis (DMTA) were also performed. A clear relationship between the increasing content of PC in the blend properties was observed. DMTA analysis revealed significant changes in the glass transition temperature, which indicates the miscibility of this type of polymer system. The mechanical tests indicate a clear trend of stiffness and strength improvement along with the increasing share of PC phase in the structure. The increase in impact strength is also clear, however, compared to the results for a pure PC, the results obtained for GPET/PC blends are significantly lower. As part of the research, reference samples based on polyethylene terephthalate homopolymer (PET) and composite samples with addition of 10% talc were also prepared. The structure analysis for PET/PC(50/50) samples did not show miscibility. However, due to the formation of the PET crystalline phase, the thermomechanical resistance of these materials was visibly higher. Scanning electron microscopy (SEM) analysis confirmed a high degree of compatibility of the GPET/PC blend structure as indicated by the lack of visible signs of phase separation. This phenomenon is not observed for PET/PC blends, which confirms the different thermomechanical interactions of both tested polymer systems.

show abstract

“…Furthermore, as the loading on the specimen was increased, crack growth from one of the notches stopped, while crack growth from the other notch continued until the other crack reached the interlaminar boundary. The stopping of the non-propagating crack is attributed to the effects of crack-tip shielding and local microstructural differences at the crack-tips (Lu et al, 2018;Seelig & Giessen, 2007;Soboyejo, 2002). The local microstructural differences resulted in differences in the crack growth from initially identical notches.…”

Section: Fracture and Toughening Mechanismsmentioning

confidence: 99%

Fracture and fatigue behavior of Bambusa Vulgaris-Schrad Bamboo

et al. 2021

View full text Add to dashboard Cite

This paper presents the results of an experimental study of the fatigue and fracture behavior of Bambusa Vulgaris-Schrad bamboo. Mechanisms of crack initiation and growth are elucidated under monotonic and cyclic compressive failure or flexural loading. The microscopic studies of fatigue and fracture explore the effects of fiber/crack/ply orientation on crack growth and toughening mechanisms in single-edge notched and double -edge notched fracture mechanics bend specimens, which are studied in the "crack-arrestor" and "crack-divider" orientations. The compressive fatigue behavior of Bambusa Vulgaris-Schrad bamboo is also investigated in smooth un-notched specimens. The resulting stress-life behavior is shown to occur in a regime in which the maximum stresses exceed the critical conditions for the onset of progressive fiber buckling and shear band formation. This results ultimately in the nucleation and propagation of interlaminar cracks and shear cracks across the Bambusa Vulgaris-Schrad structures. The implications of the results are discussed for the design of robust bamboo structures.

show abstract

Effects of microstructure on crack tip fields and fracture toughness in PC/ABS polymer blends

Cited by 10 publications

References 30 publications

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Development of Thermal Resistant FDM Printed Blends. The Preparation of GPET/PC Blends and Evaluation of Material Performance

Fracture and fatigue behavior of Bambusa Vulgaris-Schrad Bamboo

Contact Info

Product

Resources

About