Optimal winding angle in laminated CFRP composite pipes subjected to patch loading: Analytical study and experimental validation

Tashnizi, Ebrahim Sharifi; Gohari, Soheil; Sharifi, S.; Burvill, Colin

doi:10.1016/j.ijpvp.2020.104042

Cited by 13 publications

(5 citation statements)

References 29 publications

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“…By substituting equation ( 9) into equation ( 10), the relationship between the amplitude and phase of x gr and x 2 is obtained and shown in equation (11),…”

Section: Mechanical Analysismentioning

confidence: 99%

“…are the damping ratio and Eigen-frequency for m 1 and m 2 . By substituting a, 1 1 , 1 2 , v n1 , and v n2 into equation (11), the relationship between x gr and x 2 is given by equation ( 12) X 2 X gr e iu 2 =…”

Section: Mechanical Analysismentioning

confidence: 99%

“…In recent years, Carbon fiber/epoxy has been applied in various fields of industry due to excellent chemical, physical and mechanical properties and thermal stability. 11,12 In storage ring, it was processed into chamber supports in NSLS II. 13 However, due to the difficulty of processing and the limitation of the thickness ( ł 50 mm), carbon fiber/epoxy is not unsuitable as a material for the whole support.…”

Section: Introductionmentioning

confidence: 99%

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Study on support for HALF beam position monitor displacement measurement system

Wang

Lan

Luo

et al. 2022

Advances in Mechanical Engineering

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Hefei Advanced Light Facility (HALF), is a fourth-generation vacuum ultraviolet and X-ray diffraction limit synchrotron radiation (DLSR) light source under preliminary research and construction. Beam position monitor (BPM) displacement measurement system with nanometer resolution is used to correct the BPM data and achieve sub-micron beam orbit stability. In order to make full use of the performance and meet the requirement of HALF’s beam orbit stability, the supports of the system are particularly crucial. The purpose of this paper is to develop a set of support for the BPM displacement system that meet the stability requirements of HALF. A hybrid support with Invar 36 and carbon fiber/epoxy is creatively proposed to achieve stability requirements. Through the calculation of thermal expansion, the analysis of mechanical vibration and finite element analysis (FEA), the hybrid support is adjusted to higher stability. Experiments are conducted and show that the hybrid support has higher stability than traditional support. On the existing experimental platform, the vibration RMS of the hybrid support was measured at 42.6 nm in horizontal and 29.9 nm in vertical and the hybrid support could meet the requirement of HALF’s beam orbit stability.

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“…By substituting equation ( 9) into equation ( 10), the relationship between the amplitude and phase of x gr and x 2 is obtained and shown in equation (11),…”

Section: Mechanical Analysismentioning

confidence: 99%

Section: Mechanical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on support for HALF beam position monitor displacement measurement system

Wang

Lan

Luo

et al. 2022

Advances in Mechanical Engineering

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“…The application range for fiber reinforced plastics (FRPs) has seen an increase in their use as structural components in various areas of industry. Component quality has been shown to improve when incorporating FRPs in areas such as fluid transfer [ 1 , 2 ], transportation [ 3 ], and civil construction [ 4 ]. Their high strength and stiffness, combined with low density and resistance to corrosion, lead to light weight components, which are suitable for utilization in harsh conditions [ 1 , 2 , 3 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Component quality has been shown to improve when incorporating FRPs in areas such as fluid transfer [ 1 , 2 ], transportation [ 3 ], and civil construction [ 4 ]. Their high strength and stiffness, combined with low density and resistance to corrosion, lead to light weight components, which are suitable for utilization in harsh conditions [ 1 , 2 , 3 , 5 , 6 ]. Their main drawback is the amount of pollution associated with their exploitation.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Response of Epoxy Resin—Flax Fiber Composites Subjected to Repeated Loading and Creep Recovery Tests

2023

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Flax fiber-reinforced plastics have an innate eco-friendly nature due to the fiber reinforcement and reduced energy requirements in fabrication when compared to current fiber reinforced composite materials. They possess a complex time-dependent material behavior, which is investigated in the present paper. A composite material with flax fiber reinforcement on the load direction, embedded in an epoxy resin matrix, was studied. The procedures used were tensile tests, repeated loading-recovery, and creep-recovery tests, which were meant to expose the components of the response with respect to stress level and load duration. The results showed an elastic bi-linear behavior, a yield point at approximately 20% of the ultimate tensile stress, and tensile moduli of 35.9 GPa and 26.3 GPa, before and after yield. This is coupled with significant non-linear viscoelastic and, after yield, viscoplastic components, accounting for up to 14% of the strain response. The behavior is inherited from both the matrix and the fiber reinforcement and is attributed to the amorphous nature of the matrix combined with the microstructural re-organization of the fiber under load, which are partially reversible.

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Low‐velocity impact response and inspection of damage propagation for basalt fiber reinforced filament wound pipes

Demirci

Şahi̇n

2022

Polymer Composites

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In many industrial applications, filament-wound composite pipes are utilized to transmit the liquefied natural gas, chemical liquids, and waste hazardous liquids. This reveals the importance of the energy absorption capacity because the pipes in question are placed underground and occasionally exposed to impact loads. However, the high cost of carbon fibers and partially inadequate mechanical features of glass fibers have led to the search for alternative fibers. Some studies show that basalt fiber is likely to be an alternative and practical solution. In this study, it is purposed to define the low velocity impact (LVI) behaviors and damage development of basalt fiber reinforced (BFR)/Epoxy composite pipes with various winding angles. LVI tests were performed on the [±90 ] 6 , [±75 ] 6 , and [±55 /75 ] 6 BFR pipes at energy levels of 15, 20, and 25 J. The impact responses of the composite samples were compared with respect to values of force, time, displacement and absorbed energy. In order to determine the dominant damage types and their progression, microscopic examinations were carried out by taking sections in the impact area in the radial and axial directions. It has been revealed in this study that it is significant to examine the dominant damage of filament-winding composites, especially by taking cross-sections from two axes. It was determined that there are damage changes in the layers where compressive and tensile stresses occur in the impact region. It has been observed that the winding angle has a great importance on the LVI responses and damages.

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Optimal winding angle in laminated CFRP composite pipes subjected to patch loading: Analytical study and experimental validation

Cited by 13 publications

References 29 publications

Study on support for HALF beam position monitor displacement measurement system

Study on support for HALF beam position monitor displacement measurement system

Mechanical Response of Epoxy Resin—Flax Fiber Composites Subjected to Repeated Loading and Creep Recovery Tests

Low‐velocity impact response and inspection of damage propagation for basalt fiber reinforced filament wound pipes

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