Vibration welding air intake manifolds from reinforced nylon 66, nylon 6 and polypropylene

Bates, P. J.; Mah, J.; Zou, Xingqiang; Wang, C.Y; Baylis, Bobbye

doi:10.1016/j.compositesa.2004.02.019

Cited by 21 publications

(14 citation statements)

References 20 publications

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“…The solidification time reported for typical industrial components is of the order of 1s [24]. The typical measured bead sizes of welded automotive components such as air intake manifolds are in the range of 3–4 mm, and are similar to the bead sizes observed in research butt welds [4].…”

Section: Vibration Welding Process Phenomenologymentioning

confidence: 86%

“…Such challenges, imposed by the geometry (AIMs) or the material (CFRP) can be overcome by specialized processing operations, such as lost‐core injection molding [2, 4] or joining operations [2]. In lost‐core molding, the polymer is extruded or injection‐molded over a mold or core made with low‐melting metals and alloys, such as tin alloys [4]. The over‐molded core is melted out after polymer solidification, and may be reused.…”

Section: Joining Of Plasticsmentioning

confidence: 99%

“…For transverse welds, even though the general trends in process variables with respect to the process parameters remain the same, the durations of the phases II and III are longer, and the steady penetration rates are lower [11] compared to longitudinal welds (with the same specimen width) carried out at the same vibration amplitude, frequency, and weld pressure; this may be attributed to the greater exposure of the melt‐films in transversely welded surfaces to the ambient, and, therefore, greater convective cooling of the film [4, 11]. Increase in specimen width (while keeping the welding parameters constant) also typically leads to lower penetration rates in the steady state [22].…”

Section: Vibration Welding Process Phenomenologymentioning

confidence: 99%

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Thermoplastic vibration welding: Review of process phenomenology and processing–structure–property interrelationships

Patham

Foss

2010

Polymer Engineering & Sci

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Vibration welding offers a robust method for physically joining thermoplastics to fabricate complex hollow assemblies from simpler injection‐molded articles without using an external heat source, adhesives, or mechanical fasteners. Vibration welding involves a complex interplay of several phenomena—solid (Coulomb) friction, melting, high strain‐rate, pressure‐driven, strong (high‐strain) melt flows, solidification, and microstructure development—which ultimately govern the strength and integrity of the weld. Defects in the weld region may lead to catastrophic failure of the welded assembly. In this article, the current understanding of the processing–structure–property relationships in the context of vibration welding of thermoplastics and polymer‐matrix composites is reviewed. Experimental as well as analytical methods of investigation of the vibration welding process phenomenology are presented. The interrelationships between the microstructure in the weld region and the resulting weld strength and fatigue behavior are then discussed in the light of this phenomenological information for neat polymers, filled polymers, polymer blends, and foams. This review is also aimed at identifying the areas requiring further investigation with regard to understanding vibration welding phenomenology and weld structure–property relationships. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers

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Section: Vibration Welding Process Phenomenologymentioning

confidence: 86%

Section: Joining Of Plasticsmentioning

confidence: 99%

Section: Vibration Welding Process Phenomenologymentioning

confidence: 99%

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Thermoplastic vibration welding: Review of process phenomenology and processing–structure–property interrelationships

Patham

Foss

2010

Polymer Engineering & Sci

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“…There are a number of established welding processes for joining plastics, such as vibration welding, ultrasonic welding or hot plate welding [1][2][3]. Another process has increasingly been gaining in importance over the last years: laser transmission welding.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of plastics and their role for the modelling of the laser transmission welding process

Geiger

Frick

Schmidt

2008

Prod. Eng. Res. Devel.

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Laser transmission welding of plastics is a joining technique which permits the welding of plastic parts with low process inherent thermal and mechanical stresses. In order to compute the temperature fields during the welding process a simulation model of the process is established. Especially the optical and thermal properties of the welded materials are necessary as input parameters in order to model the process properly. While the thermal properties of polymers are well-investigated, there is little knowledge about the optical properties of plastics. The optical properties of different amorphous and semi-crystalline thermoplastics are therefore investigated in dependence on material temperature and additive concentration. Based on these data it is possible to analytically describe the absorption of laser energy in plastics. The computation of temperature fields during welding is carried out for polypropylene and the results are then compared with experimentally accomplished welding tests. The calculated results show good accordance with the experimentally determined melt pool geometries of welded specimens and prove the compatibility of the computation model with the experimental analysis.

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“…Temperature measurements made during vibration welding showed the importance of these two parameters on the interface temperature required for proper vibration welding. Bates et al (2004) studied the vibration welding of an industrial air intake manifold (AIM) made from nylon 66, nylon 6 and polypropylene all reinforced with 30% glass fibres. The meltdown-time profiles were measured and compared to those of simple lab-scale butt weld assemblies.…”

Section: Figmentioning

confidence: 99%

A review on techniques for improving the mechanical properties of fusion welded joints

Kalpana¹,

Rao²,

Rao³

2017

10.5267/j.esm

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This paper presents the effect of Post Weld Heat Treatment (PWHT), pulsed current welding, hybrid welding and vibratory assisted welding in the weld quality, residual stresses and mechanical properties of welded joints. At last, vibratory assisted welding has been suggested to enhance the mechanical properties of welded joints by overcoming the drawbacks in the above stated techniques. Past results showed that the welded test specimens under vibratory conditions exhibited improvements in mechanical properties than the arc welding without vibrations. Finally, some literature gaps are clearly identified and these gaps could help the future generation researchers to do work in the new direction.

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Vibration welding air intake manifolds from reinforced nylon 66, nylon 6 and polypropylene

Cited by 21 publications

References 20 publications

Thermoplastic vibration welding: Review of process phenomenology and processing–structure–property interrelationships

Thermoplastic vibration welding: Review of process phenomenology and processing–structure–property interrelationships

Optical properties of plastics and their role for the modelling of the laser transmission welding process

A review on techniques for improving the mechanical properties of fusion welded joints

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