Computer Model for Predicting Point-Bonded Nonwoven Fabric Strength, Part I

Grindstaff, T.H.; Hansen, S. M.

doi:10.1177/004051758605600607

Cited by 27 publications

(6 citation statements)

References 8 publications

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“…The examination of several web structures in our study and the results of investigations by other researchers [2,8,9,16,17] indicate that the distribution of the orientation angles (DOA) within a nonwoven can be expressed as 819 where t(x) is the relative frequency at an orientation angle X, and a, b, and n are constants. Parameter a reflects the ratio of randomly oriented fibers, b represents the peak height of the DOA curve, and n controls the peak range of the DOA curve.…”

Section: Description Of Fiber Orientationsupporting

confidence: 51%

“…Later, Hearle and Ozsanlav [ 1] ] further developed the model to incorporate binder deformation. More recently, computer models to describe behaviors of various nonwovens have been developed based on these general methods [5][6][7][8]12]. In most of these models, however, Poisson's ratio is determined from the experimental tests, which requires simultaneous measurement of axial extension and lateral contraction of a fabric under uniaxial stress.…”

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confidence: 99%

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Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Adanur

Liao

1999

Textile Research Journal

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Our early model for predicting nonwoven fabric stress-strain behavior by the finite element method is generalized to include the effects of fiber curl, which is shown to have a great effect on the tensile behavior of the fabric. A numerical method to characterize the lateral contraction of nonwovens during tensile deformation is presented. The effects of fiber arrangement characteristics on the mechanical properties of nonwovens are studied through laboratory experiments and theoretical analysis. The effects of varying thick nesses within the nonwovens on fabric strength, modulus, and stress-strain distribution are also examined. Tensile testing of several nonwoven fabrics verifies the theoretical results.

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Section: Description Of Fiber Orientationsupporting

confidence: 51%

mentioning

confidence: 99%

Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Adanur

Liao

1999

Textile Research Journal

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“…The statistical probability of having a strength-limiting defect in the fabric test sample needs to be considered. Grindstaff and IIansen [6] developed a computer model that predicts nonwoven fabric strength, but their model assumed purely elastic fiber behavior and predicted real nonwoven strength, given the bond strength and fiber properties. From their model, it is not clear why nonwoven fabrics fall short of their potential.…”

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confidence: 99%

The Strength of Thermally Point-Bonded Nonwoven Fabric

Erel

Warner

2001

Textile Research Journal

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A semi-empirical model is developed to predict the maximum achievable strength of a nonwoven fabric and to identify and scale the factors affecting that strength. The scope and accuracy of the model are limited by the assumptions made during its development, but they are shown to be quite reasonable. The results of the model calculations suggest that the practical potential strength of an ideal point-bonded nonwoven fabric is three to four times higher than the average tensile strength of the best available spunbonded fabric samples, and about one-third lower than the average strength of fiber samples. Weak fiber-bond interfaces, areal density variations, fiber property variations, and fiber curl or combinations of these and others factors may limit fabric strength. Of these four factors, the first two are the key ones that limit spunbonded fabric observed strength. Knowledge of the potential strength and the factors limiting strength may enable manufacturers to improve nonwoven strength.

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“…The numerical results were fairly comparable with analytical predictions. To make use of more advanced fiber contact models, Grindstaff and Hansen used springs to model bonds between fibers [63]. In order to determine the stiffness of springs, tensile tests were carried out on one single bond.…”

Section: Damage Models For Non-woven Fabric Compositesmentioning

confidence: 99%

Damage Prediction in Woven and Non-woven Fabric Composites

Kashani¹,

Milani²

2016

Non-Woven Fabrics

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This chapter presents a step-by-step review on different damage prediction approaches for woven and non-woven fabric composites. First, the characteristics of woven and nonwoven fabrics are distinguished one from another, suggesting more complex analyses required for non-woven fabrics. Then, the subsequent subsections are geared toward a comparison of different approaches utilized in predicting the mechanical behavior and damage mechanisms of these composites at various material scales including micro, meso, and macro. The merits and demerits of each approach with regard to practicality, accuracy, effectiveness, and characterization expense are discussed. Moreover, using recent experimental evidences, the chapter aims to highlight a number of inherent complexities in the interlaced architecture of woven composites, which may not be precisely taken into account by the damage models originally developed for non-woven and unidirectional composites. Finally, two illustrative examples on the effect of the aforementioned complexities on the mechanical behavior of woven composites are presented in more detail, through some recent works of the authors.

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Computer Model for Predicting Point-Bonded Nonwoven Fabric Strength, Part I

Cited by 27 publications

References 8 publications

Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

Fiber Arrangement Characteristics and Their Effects on Nonwoven Tensile Behavior

The Strength of Thermally Point-Bonded Nonwoven Fabric

Damage Prediction in Woven and Non-woven Fabric Composites

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