It is well known that cross-linking of polyethylene molecules into three-dimensional networks improves material properties; in particular, it enhances impact strength, thermal performance and chemical resistance. A product of good characteristics can be obtained if the manufacturing process is adequate and all involved machines are working properly. In this context, infrared thermography as a remote imaging technique may be a valuable tool to monitor the polyethylene cross-linking processes. Experimental tests were carried out on specimens without treatment and on specimens treated with either chemical processes or electron beam irradiation. Our results prove that lock-in thermography can detect local non-uniformity of material characteristics due to either the extrusion or cross-linking processes, and material differences linked to the different compound.
Non-destructive Control of Polyethylene Blanket Insulation (by Means of Lock-in Thermography) / Meola, Carosena; Carlomagno, GIOVANNI MARIA; Prisco, Umberto; Vitello, A.. - In: RESEARCH IN NONDESTRUCTIVE EVALUATION. - ISSN 0934-9847. - 15:2(2004), pp. 1-9. [10.1080/09349840490443612]
Non-destructive Control of Polyethylene Blanket Insulation (by Means of Lock-in Thermography)
MEOLA, CAROSENA;CARLOMAGNO, GIOVANNI MARIA;PRISCO, UMBERTO;
2004
Abstract
It is well known that cross-linking of polyethylene molecules into three-dimensional networks improves material properties; in particular, it enhances impact strength, thermal performance and chemical resistance. A product of good characteristics can be obtained if the manufacturing process is adequate and all involved machines are working properly. In this context, infrared thermography as a remote imaging technique may be a valuable tool to monitor the polyethylene cross-linking processes. Experimental tests were carried out on specimens without treatment and on specimens treated with either chemical processes or electron beam irradiation. Our results prove that lock-in thermography can detect local non-uniformity of material characteristics due to either the extrusion or cross-linking processes, and material differences linked to the different compound.File | Dimensione | Formato | |
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