Measurement and quantitative analysis of fiber orientation distribution in long fiber reinforced part by injection molding

Sun, Xiaotong; Lasecki, John; Zeng, Deliang; Gan, Yuan; Su, Xuming; Tao, Jie

doi:10.1016/j.polymertesting.2015.01.016

Cited by 36 publications

(25 citation statements)

References 16 publications

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“…This planar distribution of the fiber orientation is also highlighted in Sun et al. 4 for an industrial part in PP reinforced by 20 wt% of glass fibers. Experimental evaluation of the orientation tensor components is given in Table 3 for five configurations showing a stark contrast.…”

Section: Resultssupporting

confidence: 74%

“…The influence of strain rate is investigated for three values, i.e. 10 −5 s −1 , 10 −4 s −1 , and 10 −3 s −1 . Table 4 gives the initial slope of the stress–strain curve, referred to as E 0 , at three strain rates for L1 and L2.…”

Section: Resultsmentioning

confidence: 99%

“…The local displacement is measured with an extensometer of 25 mm gage length set in the middle of the sample. Tests are performed at several crosshead speed, corresponding to almost constant strain rates of 10 −5 , 10 −4 , and 10 −3 s −1 . For each configuration, three to five tests are conducted at room temperature, to check the reproducibility.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…They are used in the automotive industry with usual fiber content in the range between 30 wt% and 50 wt%, e.g. a roof bar, 1 a clutch pedal, 2 a fuel rail, 3 an instrument panel, 4 and a front-end module. 5 Polypropylene (PP) is commonly used with glass fibers because the composite exhibits interesting mechanical properties for a high performance over price ratio, low processing temperatures with a glass transition temperature T g below ambient temperature, 6,7 and also low water absorption.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of elastic anisotropic thermo-dependent properties of discontinuous fiber-reinforced composites

Lopez

Thuillier

Grohens

2019

Journal of Composite Materials

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This study focuses on the micromechanical prediction of temperature-dependent elastic properties of a composite made of a polypropylene matrix reinforced with discontinuous glass fibers. Firstly, an experimental investigation of the mechanical behavior is presented. Specimen are cut from injection-molded rectangular plates using a pattern based on fiber orientation. The microstructure is investigated by X-ray tomography at the specimen center and an average orientation tensor is calculated. Tensile tests are performed over a temperature range from ambient temperature to 85℃ and dispersion of mechanical properties is rather low; moreover, they are representative of the ones measured out of an industrial injected part. Then, the evolution of elastic properties with orientation and temperature is analyzed and compared with numerical predictions calculated with Mori–Tanaka homogenization scheme.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prediction of elastic anisotropic thermo-dependent properties of discontinuous fiber-reinforced composites

Lopez

Thuillier

Grohens

2019

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…This technique, although it requires an expensive facility, enables a three dimensional description of the microstructure without the need of polishing the sample [24][25][26]. Unlike the optical method, X-Ray CT does not need the destruction of the sample which can be thus analyzed a second time.…”

Section: Introductionmentioning

confidence: 99%

Local microstructure and stress distributions at the crack initiation site in a short fiber reinforced polyamide under fatigue loading

et al. 2016

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Quantitively evaluation of fillers' alignment for targeted manufacturing of functional composite materials

Zhang,

Ye,

Yang

et al. 2023

Polymer Composites

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Filler‐reinforced composite materials are widely used in numerous domains such as energy, optoelectronics, chemistry, and so forth, owing to their versatile microstructures, excellent properties, and low fabrication cost. By finely regulating the distribution and orientation of fillers in the base material, composite materials with fantastic thermal, chemical, and mechanical properties have been demonstrated, which are also known as “metamaterials”. For the anisotropic fillers, the orientation of fillers is crucial for designing and predicting the properties of composite materials. However, accurate and efficient evaluation of fillers' orientation remains a challenge, which severely hinders the microstructural design and topological optimization of composite materials. To solve this problem, a bidirectional pixel‐traversal method which combines with microscopic image processing was developed to evaluate the orientation of fillers in composite materials. Specifically, a vertical orientation maximization algorithm was designed to evaluate the oriented degree and oriented direction of the whole fillers, and a crossing traversal algorithm was designed to evaluate the oriented angle of individual filler. Further, this method was applied to the evaluation of microscopic images from different researches. The evaluated results show a high accuracy (average error is less than 2%) and wide applicability in the evaluation of different types of fillers. This method reveals the underlying relationship between microscopic filler orientation and macroscopic composites properties, which paves a new way for the direct optimization and processing of composite materials.

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Measurement and quantitative analysis of fiber orientation distribution in long fiber reinforced part by injection molding

Cited by 36 publications

References 16 publications

Prediction of elastic anisotropic thermo-dependent properties of discontinuous fiber-reinforced composites

Prediction of elastic anisotropic thermo-dependent properties of discontinuous fiber-reinforced composites

Local microstructure and stress distributions at the crack initiation site in a short fiber reinforced polyamide under fatigue loading

Quantitively evaluation of fillers' alignment for targeted manufacturing of functional composite materials

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