Investigation of dynamic properties of a polymer matrix composite with different angles of fiber orientations

Kadıoğlu, Ferhat; Coskun, Taner; Elfarra, Mazen

doi:10.1088/1757-899x/369/1/012037

Cited by 13 publications

(8 citation statements)

References 14 publications

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“…The inherent damping can be defined as the conversion of the mechanical energy into thermal energy within the structure, and was determined by using generally bandwidth and logarithmic decrement methods 31 . In this study, the logarithmic decrement method also called the free decay method was used to determine the damping ratio, and decrement in vibration amplitude was calculated to determine damping ratio using Equation () as follows:

ξ = \frac{normalδ}{2 π} = \frac{1}{2 n π} \ln (\frac{A_{1}}{A_{n + 1}})

Where δ, ξ, n, A 1 and A n + 1 represent the logarithmic decrement, damping ratio, cycle number, amplitude of the first cycle and amplitude of the ( n + 1) th cycle, respectively.…”

Section: Methodsmentioning

confidence: 99%

The influences of low‐velocity impact loading on the vibration responses of the carbon/glass fiber‐reinforced epoxy composites interleaved with various non‐woven thermoplastic veils

Tarih

Coskun

Yar

et al. 2023

J of Applied Polymer Sci

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Time‐dependent variable stresses that occur in composites subjected to mechanical and dynamic loads have devastating impacts on the material properties. Since these stresses reduce the service life, it is critical to detect and enhance structural responses before and after dynamic loadings. Therefore, the present study aimed to increase the toughness and delamination resistance of the conventional fiber‐reinforced composites by means of thermoplastic veil interleaves, thereby improving the vibration responses both before and after low‐velocity impact (LVI). In this context, carbon fiber (CF) and glass fiber (GF) reinforced epoxy composites interleaved with five different thermoplastic veils as Polyamide (PA), Polyetheretherketone (PEEK), Polyetherimide (PEI), Polyimide (PI) and Poly‐Phenylene Sulphide (PPS) were manufactured, and machined in accordance with the LVI standard. Composite specimens were subjected to the LVI tests, and then vibration tests were carried out for the non‐impacted and impacted specimens to determine dynamic properties. As a result, although thermoplastic veils generally have favorable effects on damping ratios of the GF composites, it has been revealed that these veils other than PPS and PI cause deterioration in CF composites. On the other hand, since vibration reduction depends on inherent damping and structural stiffness, this study also examined the storage‐to‐loss modulus ratios which denote the loss factors. In this respect, it was discovered that, while PPS, PEEK, PA, and PI thermoplastic veils included among the GF laminates ascend the loss factors of composites, only PI and PPS thermoplastic veils were shown to be positively effective in CF laminates. Moreover, CF and GF reinforced composites interleaved with thermoplastic veils generally exhibited higher natural frequency and lower damping ratio compared to the entirely CF or GF laminated composites. These results show that composite specimens gained bending stiffness due to local deformation hardening, and improved dynamic properties thanks to thermoplastic veil interleaved was attributed to increased toughness and delamination resistance.

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ξ = \frac{normalδ}{2 π} = \frac{1}{2 n π} \ln (\frac{A_{1}}{A_{n + 1}})

Where δ, ξ, n, A 1 and A n + 1 represent the logarithmic decrement, damping ratio, cycle number, amplitude of the first cycle and amplitude of the ( n + 1) th cycle, respectively.…”

Section: Methodsmentioning

confidence: 99%

The influences of low‐velocity impact loading on the vibration responses of the carbon/glass fiber‐reinforced epoxy composites interleaved with various non‐woven thermoplastic veils

Tarih

Coskun

Yar

et al. 2023

J of Applied Polymer Sci

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“…The plates were modelled with free, clamped and simply supported boundary condition. Kadioglu et al studied the effect of various of fiber orientation (at specific +/-angle combinations) on natural frequency of glass fiber reinforced cantilevered laminated composite plate [17]. Muhammet et al analyzed the free vibration characteristics of symmetric laminated cantilevered composite plate for four different fiber orientations [18].…”

Section: Vibration Characteristics Of Carbon Fiber Reinforced Polymermentioning

confidence: 99%

Vibration Characteristics of Carbon Fiber Reinforced Polymer Composites under Varying Fiber Orientation Composition

Hamzi,

Rasani,

Tahir

et al. 2019

IJEAT

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Many engineering applications today are increasingly made of laminated composite plates. The properties of laminated composite plates can change as the laminate and fiber composition change, enabling the engineering structure and components to be customized according to the desired static or dynamic properties. Therefore, it is of interest to investigate variation in dynamic properties of composites under different fiber orientation composition to forecast their vibration response. In this study, the natural frequency and mode shape of carbon fiber-reinforced polymer composite plates were obtained numerically under varying composition of the 0°, ±45° and 90° fiber orientations. Sixteen different cases were simulated using finite element method, showing changes in the natural frequency and mode shape of carbon fiber-reinforced polymer composite plates with changes in the composition of the fiber orientation. The first five values of natural frequency and mode shape of the composite laminate were reported and analyzed using a surface regression method. In addition, the effect of the stacking sequence on the natural frequency of the composite plate having the same orientation composition was also analyzed. Comparison with previous studies showed good agreement of the present numerical modeling. Numerical results indicate potential to develop relationships to estimate modal properties based on composition of fiber orientation.

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“…Сучасне машино-та приладобудування, сільськогосподарська й авіаційна техніка, енергетична та ткацька промисловість не можуть обійтися без застосування волокнистих полімерних композиційних матеріалів, зміцнених органічними волокнами, які завдяки поєднанню унікальних властивостей (високої демпфуючої здатності, стійкості до дії високих температур і корозії, малої питомої ваги) ефективно конкурують з традиційними конструкційними металами (чавун, сталь, бронза, латунь тощо) [1,2].…”

Section: вступunclassified

Вплив Волокна Танлон На Експлуатаційні Характеристики Органопластиків На Основі Фенілону С-1

Burya¹,

Томина²,

Yeriomina³

2019

ТС

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У статті розглянуто виплив полісульфонамідного волокна Танлон Т700 на фізико-механічні татрибологічні властивості ароматичного поліаміду фенілону С-1. Аналіз фізико-механічних досліджень показав деяке покращення міцнісних характеристик в’яжучого при введенні 5–10 мас.% волокна. При збільшенні масової частки наповнювача даний показник погіршується, що пов’язано знедостатньою адгезією між наповнювачем та в’яжучим, внаслідок великої жорсткості волокна. Що стосується показника абразивної зносостійкості, то як і у випадку міцнісних характеристик,максимальне покращення (на 22–42 %), спостерігається для органопластиків із вмістом наповнювача 5–10 мас.%. Подальше збільшення наповнювача в полімерній матриці до 20 мас.% призводитьдо зростання дефектності матеріалу за рахунок домінуючого розпушення волокон, яке призводитьдо утворення «непросочених» ділянок на границі поділу «фенілон-волокно». Композит з оптимальним вмістом волокна (10 мас.%), можна рекомендувати для виготовлення деталей трибовузлівсучасного обладнання.

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Investigation of dynamic properties of a polymer matrix composite with different angles of fiber orientations

Cited by 13 publications

References 14 publications

The influences of low‐velocity impact loading on the vibration responses of the carbon/glass fiber‐reinforced epoxy composites interleaved with various non‐woven thermoplastic veils

The influences of low‐velocity impact loading on the vibration responses of the carbon/glass fiber‐reinforced epoxy composites interleaved with various non‐woven thermoplastic veils

Vibration Characteristics of Carbon Fiber Reinforced Polymer Composites under Varying Fiber Orientation Composition

Вплив Волокна Танлон На Експлуатаційні Характеристики Органопластиків На Основі Фенілону С-1

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