Internal resistance heating for homogeneous curing of adhesively bonded repairs

Rider, Andrew N.; Wang, Chun H.; Cao, Junchao

doi:10.1016/j.ijadhadh.2011.01.001

Cited by 30 publications

(13 citation statements)

References 13 publications

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“…Companion information about the experimental work is provided by Ramakrishnan, Zhu, and Pitchumani [6]. Resistive heating curing experimental work in aerospace applications with a very simple heat transfer model is presented by Rider, Wang, and Cao [7] and the prediction and measurement of electrical conductivity for carbon unidirectional layers are reported by Athanasopoulos and Kostopoulos [8]. The study of the cure kinetics for aerospace employed resins has been reported by Kim, Moon, and Howell [9] and Shin and Hahn [10].…”

Section: Introductionmentioning

confidence: 99%

“…Even for the work where resistive heating was employed [5][6][7], the Joule effect power was considered constant through the whole process. However, Athanasopoulos and Kostopoulos [8] report that the electrical resistivity depends on the temperature, although this fact is not taken into account in their modelling work because it is outside the scope of their investigations.…”

Section: Introductionmentioning

confidence: 99%

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Direct Resistive Heating Simulation Tool for the Repair of Aerospace Structures through Composite Patches

Garmendia

Vallejo

Iriarte

et al. 2018

Mathematical Problems in Engineering

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Bonded composite patches are very appropriate for aircraft structural repair, showing very good properties when compared with traditional mechanical fastening of metal sheets. The curing process of the composite patch must be done "onsite" and a direct resistive heating method has been proposed. The heat produced by the electric current through the Joule effect when crossing the patch carbon fibre bundles has been modelled with a Finite Element Program code, developed for the electric current equation. The heat conduction equation has also been modelled in the program, as well as the kinetics of the curing reaction of the composite resin. The electric resistivity of the materials is function of the temperature, so a nonlinear coupled system has been developed. Therefore, a complete simulation tool able to study different configurations, current intensities, materials, etc. for the composite patches is presented. A study case has been run with the developed code and results have been compared with experimental values. Good agreement is found.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct Resistive Heating Simulation Tool for the Repair of Aerospace Structures through Composite Patches

Garmendia

Vallejo

Iriarte

et al. 2018

Mathematical Problems in Engineering

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“…Repair of thick structures while still on the aircraft can be difficult to achieve. For example, the thermal energy necessary to cure the repair adhesive must diffuse through the composite layers to reach the joint repair interfaces, resulting in long and expensive processing times as well as wasted energy [1][2][3]. Surrounding heatsensitive materials or equipment may also be damaged.…”

Section: Introductionmentioning

confidence: 99%

“…These methods could conceptually be used during composite repair, as discussed in reference [1]. As a case in point, UV photo-curable adhesives were utilized in the past and cured through, transmission of the UV light through the laminate [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Resistive embedded heating for homogeneous curing of adhesively bonded joints

Ashrafi

Devasia

Tuttle

2015

International Journal of Adhesion and Adhesives

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Einkleben von Gewindestangen in Laubholz bei niedrigen Temperaturen

et al. 2020

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Eingeklebte Gewindestangen sind ein aus dem Holzbau nicht mehr wegzudenkender Anschlusstyp. Aktuell werden hierzu 2K‐Epoxide (EPX) und Polyurethane (PUR) verwendet. Diese haben jedoch zwei wesentliche Nachteile: Der Prozess der Aushärtung erstreckt sich, je nach Klebstoffsystem, über mehrere h bis hin zu 10 d. Zum anderen benötigen die zugelassenen Klebstoffe eine Mindestaushärtetemperatur von 18 °C. Beide Nachteile behindern den Einsatz geklebter Gewindestangen, insbesondere auf der Baustelle. In diesem Beitrag werden Untersuchungen zur Bewertung der Schnellhärtbarkeit von 2K‐EPX und 2K‐PUR im Holzbau vorgestellt. In den bisherigen Untersuchungen konnte eine generelle Machbarkeit der Schnellhärtung mittels Induktion im Bereich eingeklebte Gewindestangen im Holzbau unter Normklima (+23 °C, 50 % rel. LF) nachgewiesen werden. Diese Arbeit stellt Ergebnisse zur Schnellhärtbarkeit im Niedrigtemperaturbereich (+5 °C und –10 °C) vor und vergleicht die Ergebnisse mit Referenzproben, die bei +23 °C Raumtemperatur geklebt und ausgehärtet wurden. Die Ergebnisse zeigen, dass vor allem 2K‐EPX auch unter niedrigen Temperaturen schnell ausgehärtet werden können, jedoch gleichzeitig, welchen Einfluss die Schnellhärtung auf die Festigkeit des geklebten Verbunds ausübt.

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Internal resistance heating for homogeneous curing of adhesively bonded repairs

Cited by 30 publications

References 13 publications

Direct Resistive Heating Simulation Tool for the Repair of Aerospace Structures through Composite Patches

Direct Resistive Heating Simulation Tool for the Repair of Aerospace Structures through Composite Patches

Resistive embedded heating for homogeneous curing of adhesively bonded joints

Einkleben von Gewindestangen in Laubholz bei niedrigen Temperaturen

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