General mean-field theory to describe compression of thick porous fibre networks

Jukka A. Ketoja; Sara Paunonen; Elina Pääkkönen; Tiina Pöhler; Tero Mäkinen; Juha Koivisto; Mikko Alava

General mean-field theory to describe compression of thick porous fibre networks

Jukka A. Ketoja (Corresponding author), Sara Paunonen, Elina Pääkkönen, Tiina Pöhler, Tero Mäkinen, Juha Koivisto, Mikko Alava

Aalto University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We have developed a new theory to analyse the compression-stress behaviour of foam-formed fibre materials. The experimental samples included different fibre and fines types, and they were processed with several different foaming agents. The mechanical testing was supported by simultaneous high-speed imaging and acoustic emission measurements. The theory described well the average stress behaviour upto c.a. 50% compression, despite different densities and raw materials of the samples. Moreover, the relative number of acoustic events followed the predicted proportion of buckled fibre segments for varied strain.

Original language	English
Title of host publication	Progress in Paper Physics Seminar
Subtitle of host publication	Abstract book of the PPPS2020 seminar
Editors	Jarmo Kouko, Jani Lehto, Tero Tuovinen
Place of Publication	Helsinki
Publisher	VTT Technical Research Centre of Finland
Pages	55-58
ISBN (Electronic)	978-951-38-8736-0
ISBN (Print)	978-951-38-8738-4
Publication status	Published - 1 Sept 2020
MoE publication type	A4 Article in a conference publication
Event	Progress in Paper Physics Seminar, PPPS 2020 - Jyväskylä, Finland Duration: 1 Sept 2020 → 3 Sept 2020

Publication series

Series	VTT Technology
Number	378
ISSN	2242-1211

Seminar

Seminar	Progress in Paper Physics Seminar, PPPS 2020
Abbreviated title	PPPS2020
Country/Territory	Finland
City	Jyväskylä
Period	1/09/20 → 3/09/20

Keywords

fibre network
compression
stress
strain
image analysis
acoustic emission

Access to Document

https://publications.vtt.fi/pdf/technology/2020/T378.pdf

Cite this

Ketoja, J. A., Paunonen, S., Pääkkönen, E., Pöhler, T., Mäkinen, T., Koivisto, J., & Alava, M. (2020). General mean-field theory to describe compression of thick porous fibre networks. In J. Kouko, J. Lehto, & T. Tuovinen (Eds.), Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar (pp. 55-58). VTT Technical Research Centre of Finland. https://publications.vtt.fi/pdf/technology/2020/T378.pdf

Ketoja, Jukka A. ; Paunonen, Sara ; Pääkkönen, Elina et al. / General mean-field theory to describe compression of thick porous fibre networks. Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar. editor / Jarmo Kouko ; Jani Lehto ; Tero Tuovinen. Helsinki : VTT Technical Research Centre of Finland, 2020. pp. 55-58 (VTT Technology; No. 378).

@inproceedings{2c8e388452d1417dbcee8b72198f3caf,

title = "General mean-field theory to describe compression of thick porous fibre networks",

abstract = "We have developed a new theory to analyse the compression-stress behaviour of foam-formed fibre materials. The experimental samples included different fibre and fines types, and they were processed with several different foaming agents. The mechanical testing was supported by simultaneous high-speed imaging and acoustic emission measurements. The theory described well the average stress behaviour upto c.a. 50% compression, despite different densities and raw materials of the samples. Moreover, the relative number of acoustic events followed the predicted proportion of buckled fibre segments for varied strain.",

keywords = "fibre network, compression, stress, strain, image analysis, acoustic emission",

author = "Ketoja, {Jukka A.} and Sara Paunonen and Elina P{\"a}{\"a}kk{\"o}nen and Tiina P{\"o}hler and Tero M{\"a}kinen and Juha Koivisto and Mikko Alava",

year = "2020",

month = sep,

day = "1",

language = "English",

isbn = "978-951-38-8738-4",

series = "VTT Technology",

publisher = "VTT Technical Research Centre of Finland",

number = "378",

pages = "55--58",

editor = "Kouko, {Jarmo } and Jani Lehto and Tero Tuovinen",

booktitle = "Progress in Paper Physics Seminar",

address = "Finland",

note = "Progress in Paper Physics Seminar, PPPS 2020, PPPS2020 ; Conference date: 01-09-2020 Through 03-09-2020",

}

Ketoja, JA , Paunonen, S , Pääkkönen, E, Pöhler, T, Mäkinen, T, Koivisto, J & Alava, M 2020, General mean-field theory to describe compression of thick porous fibre networks. in J Kouko, J Lehto & T Tuovinen (eds), Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar. VTT Technical Research Centre of Finland, Helsinki, VTT Technology, no. 378, pp. 55-58, Progress in Paper Physics Seminar, PPPS 2020, Jyväskylä, Finland, 1/09/20. <https://publications.vtt.fi/pdf/technology/2020/T378.pdf>

General mean-field theory to describe compression of thick porous fibre networks. / Ketoja, Jukka A. (Corresponding author); Paunonen, Sara ; Pääkkönen, Elina et al.
Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar. ed. / Jarmo Kouko; Jani Lehto; Tero Tuovinen. Helsinki: VTT Technical Research Centre of Finland, 2020. p. 55-58 (VTT Technology; No. 378).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - General mean-field theory to describe compression of thick porous fibre networks

AU - Ketoja, Jukka A.

AU - Paunonen, Sara

AU - Pääkkönen, Elina

AU - Pöhler, Tiina

AU - Mäkinen, Tero

AU - Koivisto, Juha

AU - Alava, Mikko

PY - 2020/9/1

Y1 - 2020/9/1

N2 - We have developed a new theory to analyse the compression-stress behaviour of foam-formed fibre materials. The experimental samples included different fibre and fines types, and they were processed with several different foaming agents. The mechanical testing was supported by simultaneous high-speed imaging and acoustic emission measurements. The theory described well the average stress behaviour upto c.a. 50% compression, despite different densities and raw materials of the samples. Moreover, the relative number of acoustic events followed the predicted proportion of buckled fibre segments for varied strain.

AB - We have developed a new theory to analyse the compression-stress behaviour of foam-formed fibre materials. The experimental samples included different fibre and fines types, and they were processed with several different foaming agents. The mechanical testing was supported by simultaneous high-speed imaging and acoustic emission measurements. The theory described well the average stress behaviour upto c.a. 50% compression, despite different densities and raw materials of the samples. Moreover, the relative number of acoustic events followed the predicted proportion of buckled fibre segments for varied strain.

KW - fibre network

KW - compression

KW - stress

KW - strain

KW - image analysis

KW - acoustic emission

UR - https://doi.org/10.32040/2242-122X.2020.T378

M3 - Conference article in proceedings

SN - 978-951-38-8738-4

T3 - VTT Technology

SP - 55

EP - 58

BT - Progress in Paper Physics Seminar

A2 - Kouko, Jarmo

A2 - Lehto, Jani

A2 - Tuovinen, Tero

PB - VTT Technical Research Centre of Finland

CY - Helsinki

T2 - Progress in Paper Physics Seminar, PPPS 2020

Y2 - 1 September 2020 through 3 September 2020

ER -

Ketoja JA , Paunonen S , Pääkkönen E, Pöhler T, Mäkinen T, Koivisto J et al. General mean-field theory to describe compression of thick porous fibre networks. In Kouko J, Lehto J, Tuovinen T, editors, Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar. Helsinki: VTT Technical Research Centre of Finland. 2020. p. 55-58. (VTT Technology; No. 378).

General mean-field theory to describe compression of thick porous fibre networks

Abstract

Publication series

Seminar

Keywords

Access to Document

Other files and links

Fingerprint

Progress in Paper Physics Seminar: Abstract book of the PPPS2020 seminar September 1-3, 2020 in Jyväskylä, Finland

FFP2020 (FRDF): Future Fibre Products - FFP2020

Cite this

General mean-field theory to describe compression of thick porous fibre networks

Abstract

Publication series

Seminar

Keywords

Access to Document

Other files and links

Fingerprint

Research output

Progress in Paper Physics Seminar: Abstract book of the PPPS2020 seminar September 1-3, 2020 in Jyväskylä, Finland

Projects

FFP2020 (FRDF): Future Fibre Products - FFP2020

Cite this