Influence of Process Parameters on the Phenomenon of Stress Cracking during Hot Plate Welding

Potente, H.; Schnieders, Joachim

doi:10.1177/0731684402021006828

Cited by 13 publications

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“…H OT PLATE WELDING [1][2][3][4][5] has become an important process in industry in the joining of thermoplastic parts that have a low softening temperature. Components of various complexity and size produced by extrusion, injection molding, or other methods can be fixed together using this technology.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Interface Geometry on the Joint Strengths of Hot Plate Welded Composites

Liu

Cheng

2009

Journal of Reinforced Plastics and Composites

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Interface geometry before joining has been an important factor for the welding quality of hot plate welding. In the present study, weld interfaces of six different geometries were studied, namely flat, triangular (308, 458, and 608), rectangular, and semi-circular interfaces. Three materials were used in the study: virgin polypropylene, and 20 and 30% glass fiber-reinforced polypropylene composites. All specimens used in the experiments were molded using a pin injection gate on a reciprocating injection molding machine. After welding, the joint strength of the composites was determined by a tensile tester. Welded 20% glass fiber-reinforced polymers were found to exhibit the highest joint strengths. For the parameters selected in the experiments, hot plate temperature, heating time, and geometry of weld interface were found to be the principal factors affecting the joint property of hot plate welded composites. In addition, the triangular and rectangular weld interfaces were found to weld parts of the highest strengths for virgin polypropylene and 20% glass fiber-reinforced polypropylene composites, respectively, while the joint strengths of 30% fiber-reinforced composites were improved by adopting non-flat weld interface geometries.

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Section: Introductionmentioning

confidence: 99%

The Influence of Interface Geometry on the Joint Strengths of Hot Plate Welded Composites

Liu

Cheng

2009

Journal of Reinforced Plastics and Composites

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“…24 Increased hot plate temperature and/or heating time makes components more susceptible to stress cracking. 10…”

Section: Literature Reviewmentioning

confidence: 99%

“…Due to complexity in product design, welding of plastic is now one of the very important aspect of manufacturing. 10 It is recommended to obtain weld strength of joints as close to the strength of the base material. Closely a finished weld joint approximates the quality of the seamless parent material.…”

Section: Problem Descriptionmentioning

confidence: 99%

“…9 Due to complexity in product design, welding of plastic is now one of the very important aspect of manufacturing. 10 Due to process simplicity and low cost of manufacturing, hot plate welding is one of the preferred welding technique used for welding of plastics. Hot plate welding process uses a heated platen to melt the surfaces to be joined of the two halves of a thermoplastic part.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the interrelationship between the parameters for improving weld strength in plastic hot plate welding: A DEMATEL approach

Mathiyazhagan

Singh

Sivabharathi³

2019

Journal of Elastomers & Plastics

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Application of plastics is increasing day by day since plastics offer many distinct advantages as compared to metals. Plastics has mainly good thermal and electrical insulation properties, corrosion resistance, chemical inertness, and high strength to weight ratio. Additionally, these are cheaper in cost as compared to conventional materials. Plastics are additionally easy to process. Nowadays, product requirements are getting critical and thus product design is getting more complex in shape. To manufacture intricate complex shape creates complexity in manufacturing process which is sometimes very difficult or almost not feasible to produce with single manufacturing process. To manufacture such critical products, welding is a complimentary process. Type of weld joint and welding process can be selected based on the product design and load application on the product. Hot plate welding is very simple welding process as compared to other plastic welding process and most commonly used. Good quality weld is the prime objective of welding process. Weld strength is dependent on several parameters which may be process parameters as well as product parameters. The objective of this study is to identify the key parameters in hot plate welding process of the plastics using Decision Making Trial and Evaluation Laboratory which is one of the prioritization techniques. Results of the study focus on understanding the key parameters affecting the weld strength. Study shows that hot plate temperature, welding time, and melting time are the key parameters affecting the weld strength.

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“…It was discovered in these investigations that the level of the inherent stress is influenced by the heating phase in particular. [2] One possibility of estimating the level of inherent stresses and investigating the influence of process parameters on receptivity to stress cracking is to conduct a finite element analysis. [3] One drawback of this are the high computing costs that are involved.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Model for the One‐Dimensional Temperature and Stress Calculation of Simple Hot Plate Welded Geometries

Potente

Schnieders

Bornemann

2002

Macro Materials & Eng

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In the field of hot plate welding, experimental investigations show that the stress cracks are caused by inherent stresses in the component, which are induced in the part while it is being heated on the tool. For the better understanding of the process parameters and their effects on the phenomenon of stress cracking, a simple theoretical model for the calculation of the temperature and the stress field is to be developed. The application of the presented method shows the effects of the process parameters on the phenomenon of stress cracking and correlates with the experimental results of further investigations. Theoretical stress distribution.magnified imageTheoretical stress distribution.

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Influence of Process Parameters on the Phenomenon of Stress Cracking during Hot Plate Welding

Cited by 13 publications

References 0 publications

The Influence of Interface Geometry on the Joint Strengths of Hot Plate Welded Composites

The Influence of Interface Geometry on the Joint Strengths of Hot Plate Welded Composites

Modeling the interrelationship between the parameters for improving weld strength in plastic hot plate welding: A DEMATEL approach

Theoretical Model for the One‐Dimensional Temperature and Stress Calculation of Simple Hot Plate Welded Geometries

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