On the source of the thermoelastic response from orthotropic fibre reinforced composite laminates

Jiménez-Fortunato, Irene; Bull, D.J.; Thomsen, Ole Thybo; Dulieu-Barton, J.M.

doi:10.1016/j.compositesa.2021.106515

Cited by 17 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The heat was applied to the laminate's top surface and is distributed from the top layer (layer 1) to the bottom layer (layer 4) with the Stefan-Boltzmann constant = 5.67 x 10-8 Wm −2 K −4 and emissivity ϵ = 0.96. 12 Furthermore, the sample orientation was aligned with the global axis, which identifies the different faces of the laminate. The specimen model and its boundary conditions for the thermal loading are presented in Figure 1.…”

Section: Thermal Stepmentioning

confidence: 99%

Numerical modeling of thermal effects on mechanical behavior of additive manufactured carbon fiber reinforced polymer

Mieloszyk

Muna

2023

Health Monitoring of Structural and Biological Systems XVII

View full text Add to dashboard Cite

The popularity of additive manufacturing has been growing over the last few decades. Additive manufactured composites have a wide range of applications in engineering sectors specifically in aerospace structures. In addition to mechanical loads, they are subjected to thermal loads caused by aerodynamic heating. Temperature increases cause changes in material properties, which complicates thermal stress analysis. The thermal loading was simulated with specific boundary conditions similar to the experiments where the sample was placed inside the oven chamber. While for the mechanical (tensile) testing loading, the sample's geometry was created with gripping lines to be in accordance with ASTM D3039 standards for tensile tests used in experimental work and surface traction for the applied load. The highest modulus and strength were achieved from the intact sample while the lowest mechanical modulus and strength were obtained in the sample with heat treatment at prolonged temperature of 145 • C. At high temperatures, matrices soften affecting matrix-dominated properties such as transverse and in-plane shear stiffness and strength. A good correlation between the predictive models and experimental results is obtained.

show abstract

Section: Thermal Stepmentioning

confidence: 99%

Numerical modeling of thermal effects on mechanical behavior of additive manufactured carbon fiber reinforced polymer

Mieloszyk

Muna

2023

Health Monitoring of Structural and Biological Systems XVII

View full text Add to dashboard Cite

show abstract

“…Both the load and temperature signals are post processed to using a 'lock-in' procedure to provide a temperature change, ∆T, which is directly proportional to the stress change. Typically, TSA provides surface data but can detect damage (for example cracks) at various depths depending on the loading frequency and associated level of thermal response, recently demonstrated by Jiménez-Fortunato et al [63].…”

Section: Thermographymentioning

confidence: 99%

Non-destructive examination (NDE) methods for dynamic subsea cables for offshore renewable energy

et al. 2022

View full text Add to dashboard Cite

Offshore renewable energy installations are moving into more challenging environments where fixed foundations are not economically viable, forcing the development of floating platforms. Subsea cables are critical for transfer of the power generated back to shore. The electrical capabilities of subsea cables are well understood; however, the structural capabilities are not, subsea power cable failures accounting for a significant proportion of insurance claims. Cables are challenging to repair, with specific vessels and good weather windows required, therefore making operations very costly. A good understanding of the internal structure of a subsea cable, and interaction between the layers, is integral to the development of robust and reliable, high voltage, dynamic, subsea cables. A requirement therefore exists for non-destructive examination (NDE) of live subsea cables to determine locations, and identify the causes, of faults and classify their type. An NDE framework such as this would assist in planning operations and reduce the risk and cost inherent to delivering offshore power. Improved understanding of subsea cable failure modes and mechanisms could also be achieved through us of NDE during onshore, dry, experimental testing. Three currently available NDE methods are considered, developed for use in other disciplines, for the purpose of structural monitoring of subsea power cables during onshore evaluation testing. The NDE methods were: i) thermography, ii) eddy current testing (ECT), iii) spread spectrum time domain reflectometry (SSTDR). The methods are assessed with regards to the information that could be obtained from both a static and oscillating cable in pilot physical tests. The results of the testing were promising, with cable motions and interlayer movements being detected by all techniques to various degrees.

show abstract

“…The boundary conditions assigned to the sample model are determined by how it interacts with the external surroundings to accurately represent the physical phenomena of the experimental set-up which may insulate the edges. The heat was applied at the top surface of the laminate and is distributed from the top layer (layer 1) towards the bottom (layer 6) with the Stefan-Boltzmann constant = 5.67 × 10 −8 Wm −2 K −4 and emissivity = 0.96 [42]. In addition, the sample orientation was positioned correspondingly with the global axis, which identifies the different faces of the laminate.…”

Section: Boundary Problem Formulationmentioning

confidence: 99%

Temperature Influence on Additive Manufactured Carbon Fiber Reinforced Polymer Composites

Muna

Mieloszyk

2021

Materials

View full text Add to dashboard Cite

The popular applications of Additive Manufactured (AM) polymer materials in engineering, medical, and industrial fields have been widely recognized due to their high-speed production despite their complex design shapes. Fused Deposition Modeling (FDM) is the technique that has become the most renowned AM process due to its simplicity and because it is the cheapest method. The main objective of this research is to perform a numerical simulation of the thermo-mechanical behaviour of AM polymer with continuous carbon fibre reinforcement exposed to elevated temperatures. The influence of global thermal loads on AM material was focused on mechanical property changes at the microscale (level of fiber–matrix interaction). The mechanical response (strain/stress distribution) of the AM material on the temperature loading was modelled using the finite element method (FEM). The coupled thermal-displacement analysis was used during the numerical calculations. The strain in the sample due to its exposition on elevated temperature was measured using fibre Bragg grating (FBG) sensors. The numerical results were compared with the experimental results achieved for the sample exposure to the same thermal conditions showing good agreement. A strong influence of the temperature on the matrix structure and the condition of bondings between fibres and matrix was observed.

show abstract

On the source of the thermoelastic response from orthotropic fibre reinforced composite laminates

Cited by 17 publications

References 23 publications

Numerical modeling of thermal effects on mechanical behavior of additive manufactured carbon fiber reinforced polymer

Numerical modeling of thermal effects on mechanical behavior of additive manufactured carbon fiber reinforced polymer

Non-destructive examination (NDE) methods for dynamic subsea cables for offshore renewable energy

Temperature Influence on Additive Manufactured Carbon Fiber Reinforced Polymer Composites

Contact Info

Product

Resources

About