Embedded single carbon fibre to sense the thermomechanical behavior of an epoxy during the cure process

Hsiao, Kuang‐Ting

doi:10.1016/j.compositesa.2012.11.007

Cited by 15 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar usage of glass fibers in optical property sensing is another possibility. Although significant work has already been done in damage detection with self-sensing [67][68][69], it is the belief of the authors that the first steps in in-line monitoring via self-sensing composites are being made at the moment by studies such as [19,48,50,70].…”

Section: Discussion 31 Emerging Trends and Technologiesmentioning

confidence: 99%

“…However, degassing at elevated temperatures was able to reduce void formation to acceptable levels. Hsiao [19] derived the thermomechanical behavior of a curing epoxy resin using a single carbon fiber embedded in it. Electrical resistance and the thermal history revealed the T g corresponding to the abrupt change in the coefficient of thermal expansion, the T g by the storage modulus (E") onset, and the upper temperature limit for linear E"-T relationship.…”

Section: Direct Current (Dc) Analysismentioning

confidence: 99%

See 1 more Smart Citation

Monitoring the production of FRP composites: A review of in-line sensing methods

Konstantopoulos¹,

Fauster²,

Schledjewski³

2014

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract.Composites manufacturing is characterized by many degrees of freedom. Different materials, geometries and thermo-dynamical conditions contribute to a behavior that is difficult to predict. Monitoring the running process (in-line monitoring) eliminates the need for prediction; real time data provided by appropriate sensing systems can be used in the direction of process optimization, quality upgrade or material characterization. The aim of the review at hand is to record and discuss the latest progress in the field of in-line composites monitoring with a focus on Fiber Reinforced Polymericbased (FRP) composite structures. Summaries of each sensor's principles of operation, appropriate association with polymer/composite properties detection, brief descriptions of representative studies, a critical overview of implementation aspects and discussion on the upcoming trends, contribute in constructing a complete picture.

show abstract

Section: Discussion 31 Emerging Trends and Technologiesmentioning

confidence: 99%

Section: Direct Current (Dc) Analysismentioning

confidence: 99%

Monitoring the production of FRP composites: A review of in-line sensing methods

Konstantopoulos¹,

Fauster²,

Schledjewski³

2014

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…It can be explained that within a temperature range above the glass transition temperature and below the melting point, the mobility of the BOPA6 molecular chain increases with temperature under external force, forming a more orderly arrangement structure, thereby improving the storage modulus. The decrease of storage modulus in the temperature range of 70 • C to 90 • C is due to the transition of PA6 from a glassy to rubbery state in the glass transition zone, that is, the α-transition process [30], which results in insufficient stiffness of BOPA6. The loss factor of BOPA6 decreases with the increase in stretching temperature, indicating that the energy loss of the internal system of the material decreases at high temperatures.…”

Section: Dynamic Mechanical Properties Of Bopa6mentioning

confidence: 99%

Investigation on the Correlation between Biaxial Stretching Process and Macroscopic Properties of BOPA6 Film

Li,

Liao,

et al. 2024

Polymers

View full text Add to dashboard Cite

Biaxially oriented polyamide 6 (BOPA6) films were prepared by extrusion casting and biaxial stretching with polyamide 6. The effects of different biaxially oriented on the macroscopic properties of BOPA6 were investigated by characterizing the rheological, crystallization, optical, barrier and mechanical properties. The results show that the increase of stretching temperature leads to the diffusion and regular stacking rate of BOPA6 chain segments towards crystal nuclei increases, the relative crystallinity increases, reaching 27.87% at 180 °C, and the mechanical strength and optical performance decrease. Heat-induced crystallization promotes the transformation of β-crystals to α-crystals in BOPA6, resulting in a more perfect crystalline structure and enhancing oxygen barrier properties. BOPA6 chains are oriented, and strain-induced crystallization (SIC) occurs during the biaxial stretching. Further increasing the stretch ratio, the relative crystallinity increased to 30.34%. The machine direction (MD) and transverse direction (TD) tensile strength of BOPA6 (B-33) are nearly two times higher than the unstretched film, reaching 134.33 MPa and 155.28 MPa, respectively. In addition, the permeation decreases to 57.61 cc·mil/(m2 day), and the oxygen barrier performance has improved by nearly 30% compared to the sample B-22. BOPA6 has a high storage modulus at a high stretching rate (300%/s). Rapid chain relaxation would promote the molecular chain disorientation, destroy the entangled network of the molecular chain, and lead to a decrease in tensile strength, reducing to about 110 MPa.

show abstract

“…Two parallel carbon fiber tows were used as electrodes of a lineal dielectric sensor to monitor resin flow [76]. Single carbon fibers have also been used as sensor fibers to composite materials following the cure process of, for instance, epoxy resins [77]. Here, the variations in electrical resistance of the carbon fiber are the response used to sense the thermo-mechanical behavior during cure.…”

Section: Dielectric Analysis Sensormentioning

confidence: 99%

Processing

Kandelbauer

2014

Handbook of Thermoset Plastics

View full text Add to dashboard Cite

Embedded single carbon fibre to sense the thermomechanical behavior of an epoxy during the cure process

Cited by 15 publications

References 6 publications

Monitoring the production of FRP composites: A review of in-line sensing methods

Monitoring the production of FRP composites: A review of in-line sensing methods

Investigation on the Correlation between Biaxial Stretching Process and Macroscopic Properties of BOPA6 Film

Processing

Contact Info

Product

Resources

About