Failure analyses of flexible Ultra-High Molecular Weight Polyethylene (UHMWPE) fiber reinforced anti-blast wall under explosion

2018 ◽  
Vol 184 ◽  
pp. 759-774 ◽  
Author(s):  
Bei Zhang ◽  
Xinzhe Nian ◽  
Fengnian Jin ◽  
Zhicheng Xia ◽  
Hualin Fan
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Fiber Reinforced ◽  
Uhmwpe Fiber ◽  
Ultra High Molecular Weight

Strength tests of fiber-reinforced composite with ultra-high molecular weight polyethylene

2018 ◽  
Vol 68 (3) ◽  
pp. 293-301
Author(s):  
Rafał Brożek ◽  
Szymon Kubanek ◽  
Beata Czarnecka ◽  
Ryszard Koczorowski ◽  
Barbara Dorocka-Bobkowska
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Composite Material ◽  
High Molecular Weight ◽  
Organic Polymer ◽  
Fiber Reinforced ◽  
Uhmwpe Fiber ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Ultra High Molecular Weight

Introduction. Ultra-high molecular weight polyethylene (UHMWPE) fibers are inert, thus their adhesion to the organic polymer matrix of the composite material may not be rewarding. Therefore, these types of fibers have not yet come into widespread use in dentistry. Aim of the study. To evaluate selected strength characteristics of the UHMWPE fiber-reinforced composite whose surface was chemically activated and then impregnated with a mixture of dimethacrylate resins and coated with a microhybrid composite material. Material and method. Tests were carried out which allowed to evaluate selected mechanical properties of the material under static stretching and shearing. Results. Based on the experiments the following values were calculated: Young’s elastic modulus Et = 3583.97 ± 1325.75 MPa, tensile stress σ = 59.73 ± 7.54 MPa, maximum tensile force Fmax = 121.23 ± 17.92 N, linear extension εt = 0.03 ± 0.003 and tangential stress τt = 4.99 ± 1.19 MPa. The loss of adhesion of the material to the hard tissues of the tooth was typical of the mixed adhesive-cohesive breakthrough. Conclusions. The study revealed high and desired mechanical strength in both the tensile test and in the shear test, which may justify the effective use of this type of fibers in clinical practice. The phenomena of saturation and penetration of the resin into the space between the fiber bundles occurring in the oxidation process did not negatively affect the mechanical properties of the material tested.

Energy Absorption of Ultra-High Molecular Weight Polyethylene Fiber-Reinforced Laminates at High Strain Rates

2010 ◽  
Vol 34-35 ◽  
pp. 1532-1535 ◽  
Author(s):  
Bin Bin Shi ◽  
Ying Sun ◽  
Li Chen ◽  
Jia Lu Li
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Energy Absorption ◽  
Dynamic Mechanical Properties ◽  
Strain Rates ◽  
Fiber Reinforced ◽  
Stress Strain ◽  
Uhmwpe Fiber ◽  
Polyethylene Fiber ◽  
Ultra High Molecular Weight

Some dynamic compressive tests about Ultra-High Molecular Weight Polyethylene Fiber-reinforced laminated Composites have been done using SHPB experimental system．The stress-strain curves of UHMWPE Fiber-reinforced Composites of three different laminated angles (0/90°, 0/90/45/-45°, 0/90/30/-60/60/-30°) are obtained at higher strain rates and their dynamic mechanical properties are also investigated at the same time．Based on all the stress-strain curves obtained, the characteristics of energy absorption of UHMWPE fiber angle-plied composites are analyzed and discussed．It is found that laminated angle has made little effect on the dynamic energy absorption of composites at higher strain rates．In addition，delamination and compaction in the thickness direction constitute the main dynamic failure mechanisms, which are studied by means of image analyses for the specimens after compression.

scholarly journals Hybrid Self-Reinforced Composite Materials Based on Ultra-High Molecular Weight Polyethylene

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1739 ◽  
Author(s):  
Dmitry Zherebtsov ◽  
Dilyus Chukov ◽  
Eugene Statnik ◽  
Valerii Torokhov
Keyword(s):  
Molecular Weight ◽  
Shear Strength ◽  
High Molecular Weight ◽  
Flexural Modulus ◽  
Dsc Analysis ◽  
Uhmwpe Fiber ◽  
Lap Shear ◽  
Reinforced Composite ◽  
Hot Compaction ◽  
Ultra High Molecular Weight

The properties of hybrid self-reinforced composite (SRC) materials based on ultra-high molecular weight polyethylene (UHMWPE) were studied. The hybrid materials consist of two parts: an isotropic UHMWPE layer and unidirectional SRC based on UHMWPE fibers. Hot compaction as an approach to obtaining composites allowed melting only the surface of each UHMWPE fiber. Thus, after cooling, the molten UHMWPE formed an SRC matrix and bound an isotropic UHMWPE layer and the SRC. The single-lap shear test, flexural test, and differential scanning calorimetry (DSC) analysis were carried out to determine the influence of hot compaction parameters on the properties of the SRC and the adhesion between the layers. The shear strength increased with increasing hot compaction temperature while the preserved fibers’ volume decreased, which was proved by the DSC analysis and a reduction in the flexural modulus of the SRC. The increase in hot compaction pressure resulted in a decrease in shear strength caused by lower remelting of the fibers’ surface. It was shown that the hot compaction approach allows combining UHMWPE products with different molecular, supramolecular, and structural features. Moreover, the adhesion and mechanical properties of the composites can be varied by the parameters of hot compaction.

The evolution of crystalline structures during gel spinning of ultra-high molecular weight polyethylene fibers

Soft Matter ◽  
2018 ◽  
Vol 14 (44) ◽  
pp. 8974-8985 ◽  
Author(s):  
Christopher K. Henry ◽  
Giuseppe R. Palmese ◽  
Nicolas J. Alvarez
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Crystalline Structure ◽  
Weissenberg Number ◽  
Crystalline Morphology ◽  
Gel Spinning ◽  
Uhmwpe Fiber ◽  
Crystalline Structures ◽  
Ultra High Molecular Weight ◽  
Polyethylene Fibers

The Weissenberg number during gel spinning controls the crystalline morphology of the as spun UHMWPE fiber. The final drawn crystalline morphology strongly depends on the starting as-spun crystalline structure.

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