Real-Time Characterization of Pultrusion Processes with a Temperature Control

Barkanov, E.; Akishin, Pavel; Namsone, Endija; Бондарчук, А. А.; Pantelelis, Nikos

doi:10.1007/s11029-020-09868-4

Cited by 15 publications

(11 citation statements)

References 24 publications

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“…10 DSC can be used in measuring thermal conductivity and cure kinetics of solid materials thermosetting polymers. 11,12 Cure kinetic and rheological parameters of resin measured by DSC and viscometer instruments may be used to comprehend influence of operating conditions, like line speed and heating rate on curing in the pultrusion die used. 13,14 Heat flow in the die gets affected by line speed, material configuration, cure kinetics of formulated resin, and die thickness.…”

Section: Introductionmentioning

confidence: 99%

Determination of cure mechanism inside die for a part manufacturing during large‐scale pultrusion

Mukherji¹,

Tarapore²,

Njuguna

2021

J of Applied Polymer Sci

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The cure kinetics of resin, heat capacity, and thermal conductivity of reinforcing materials of uncured mass dictate the ultimate curing of reinforced thermosets manufactured component. In this study, the degree of conversion from heat capacity by "Lumry and Eyring Model" and order of reaction by multi-regression technique using "Borchardt and Daniels Model" are calculated in finding cure kinetics (ɣ) of the resin. Experimental results from differential scanning calorimetry, thermogravimetry (TGA), and rheological measurements were used to determine thermal conductivity, heat capacity, and rheological parameters of the resin through several model fitting. The calculated thermal conductivity of uncured composite from ration of (length vs. contact area) and thermal resistivity extracted from TGA data was fitted into a specific mathematical model, which predicts the thermal behavior of heated prepreg during pultrusion operation. These parameters used in a separate mathematical partial differential equation-based model equation to predict the change in temperature and resin conversion along axial distance and radial thickness. The influence of operating conditions, such as rate of heating (early and late heating) and fiber volume fraction while curing inside die were calculated and validated with experimental results. This study evaluates the extent of heat transfer and degree of conversion inside pultrusion die during scale up steady state process.It is observed that the paradigm of influencing parameters like pulling speed, die radial thickness and heater engagement (early and late heating) on heat flow from die wall to core (i.e., thickness of the part being pulled) follows the data captured experimentally.

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Section: Introductionmentioning

confidence: 99%

Determination of cure mechanism inside die for a part manufacturing during large‐scale pultrusion

Mukherji¹,

Tarapore²,

Njuguna

2021

J of Applied Polymer Sci

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“…In literature, many different numerical and experimental techniques are carried out to design pultrusion processes. Mostly, thermo-chemical modelling in transient and steady state analyses are developed for a better understanding of pultrusion processes to analyse the distributions of temperature and degree of cure inside the die, using the finite element methodology [13]- [15] finite difference methodology, based on the nodal control volume method [16], [17].…”

Section: Introductionmentioning

confidence: 99%

“…A systematic study on material properties of pultruded GFRP composites is very important for extend application these materials in civil engineering [24]- [26] and simulation on mechanical behaviour of structures under loading. Characterization of mechanical behaviour is not only an important study for entire structures under loading, but also for the separate parts in time of their production, since stresses and deformations caused by the process may occur [27]- [29].…”

Section: Introductionmentioning

confidence: 99%

Experimental Compare of the Mechanical Properties of Pultruded Glass Fibre Reinforced Plastic Based on Polyester and Vinylester Resin

Kovaļovs

Morozovs²

2021

ETR

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The main purpose of this study is an experimental investigation and comparison of the mechanical properties of pultruded glass fibre reinforced polymer composite based on polyester and vinylester resin. For this purpose, the specimens were cut from the walls of square tube pultruded profile along to the fibres direction. The mechanical properties of the pultruded composite such as ultimate tensile strength and ultimate bending strength, tensile modulus and flexural modulus were obtained. It was observed that using of vinyl ester resin in pultruded composite instead of polyester resin enhanced the ultimate tensile and flexural strength from ~13% to ~24% in dependence of composite specimen’s thickness.

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“…In literature, many different numerical and experimental techniques are carried out to design pultrusion processes. Mostly, thermo-chemical modelling in transient and steady state analyses are developed for a better understanding of pultrusion processes to analyse the distributions of temperature and degree of cure inside the die, using the finite element methodology [7]- [9] finite difference methodology [10], [11], based on the nodal control volume method.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Residual Stresses and Deformations of a Pultruded Thin Beam Profile

Namsone

2021

ETR

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In the present study, a coupled 3D transient thermo-chemical analysis together with 2D plane strain mechanical analysis is carried out for the pultrusion process. For the mechanical analysis, a cure hardening instantaneous linear elastic (CHILE) approach is used of a thin beam profile made of glass fibre and epoxy resin. The applied approach is efficient and fast to investigate the residual stresses and deformations together with the distributions of temperature and degree of cure obtained from the thermo-chemical analysis.

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Real-Time Characterization of Pultrusion Processes with a Temperature Control

Cited by 15 publications

References 24 publications

Determination of cure mechanism inside die for a part manufacturing during large‐scale pultrusion

Determination of cure mechanism inside die for a part manufacturing during large‐scale pultrusion

Experimental Compare of the Mechanical Properties of Pultruded Glass Fibre Reinforced Plastic Based on Polyester and Vinylester Resin

Investigation of Residual Stresses and Deformations of a Pultruded Thin Beam Profile

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