Quality assurance of uncured polymer matrix prepregs through the application of non-destructive methods

Pollock, Luke; O’Byrne, Sean; Wild, Graham

doi:10.1016/j.ndteint.2022.102761

Cited by 10 publications

(7 citation statements)

References 97 publications

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“…With many similarities to non-destructive testing and evaluation (NDT&E), SHM operates in-situ, providing real-time information about the health of a structure to render damage assessments and provide prognostics [4][5][6]. The environment in which aerospace vehicles operate and the increasing demand for lighter structures to meet emissions targets and reduce costs motivate the development of an SHM network [7].…”

Section: Structural Health Monitoringmentioning

confidence: 99%

A Numerical Study of Lamb Wave Localisation in Thin Plates Using a Passive Co-Linear Phased Array

Pollock

Wild

2023

Preprint

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Section: Structural Health Monitoringmentioning

confidence: 99%

A Numerical Study of Lamb Wave Localisation in Thin Plates Using a Passive Co-Linear Phased Array

Pollock

Wild

2023

Preprint

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“…The fiber content of prepreg is generally 60%-70%. When the fiber exceeds 70%, the contact between fibers may have a negative impact on the mechanical properties, while 60-65% is a more compromised value [2,3]. In the automated material placement of thermosetting resin prepregs, pressure is applied to the prepreg to bond it to the mould surface.…”

Section: Introductionmentioning

confidence: 99%

A Peel Test Method to Characterise the Decay Law of Prepreg Tape Tack at Different Temperatures

Shi,

Wang,

Wang

et al. 2024

Preprint

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Tack is one of the most important factors affecting the operability of prepregs, but it is still very difficult to obtain the change of prepreg tack with time at different temperatures. In this paper, a newly designed T-peel device is used to test the tack decay rate of prepregs at different temperatures. The obtained decay rate deviates less than 8.9% from the manufacturer's data. The maximum deviation of the ratio of tack decay speeds calculated by the Arrhenius equation from the experiments is not higher than -9.7%. It is proved that the present method can obtain the decay rate of tack of prepregs at different temperatures. This method is also applicable to the other two types of prepregs. The article proposes the handling life unit, an operational life measurement unit for prepregs, and establishes that the relationship between tack and remaining shelf life reduces prepreg management costs.

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“…In the case of manufacturing process QA and QC, depending on the measuring technique used the methods can be divided into destructive and non-destructive testing [ 14 , 15 , 16 ]. In the case of the continuous production process, non-destructive methods are especially interesting.…”

Section: Introductionmentioning

confidence: 99%

Single-Point and Surface Quality Assessment Algorithm in Continuous Production with the Use of 3D Laser Doppler Scanning Vibrometry System

Ścisło

2023

Sensors

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In the current economic situation of many companies, the need to reduce production time is a critical element. However, this cannot usually be carried out with a decrease in the quality of the final product. This article presents a possible solution for reducing the time needed for quality management. With the use of modern solutions such as optical measurement systems, quality control can be performed without additional stoppage time. In the case of single-point measurement with the Laser Doppler Vibrometer, the measurement can be performed quickly in a matter of milliseconds for each product. This article presents an example of such quality assurance measurements, with the use of fully non-contact methods, together with a proposed evaluation criterion for quality assessment. The proposed quality assurance algorithm allows the comparison of each of the products’ modal responses with the ideal template and stores this information in the cloud, e.g., in the company’s supervisory system. This makes the presented 3D Laser Vibrometry System an advanced instrumentation and data acquisition system which is the perfect application in the case of a factory quality management system based on the Industry 4.0 concept.

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Quality assurance of uncured polymer matrix prepregs through the application of non-destructive methods

Cited by 10 publications

References 97 publications

A Numerical Study of Lamb Wave Localisation in Thin Plates Using a Passive Co-Linear Phased Array

A Numerical Study of Lamb Wave Localisation in Thin Plates Using a Passive Co-Linear Phased Array

A Peel Test Method to Characterise the Decay Law of Prepreg Tape Tack at Different Temperatures

Single-Point and Surface Quality Assessment Algorithm in Continuous Production with the Use of 3D Laser Doppler Scanning Vibrometry System

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