Abstract
Bamboo stressed flattening process is an innovative forming technique. In this process, a pair of horizontal loads was exerted on both sides of a bamboo piece to counteract the tensile stress of the bamboo inner layer in response to flattening. The theoretical model of this process was developed and introduced in this paper. A special device that is capable of providing the loads required was constructed and various series of experiments on bamboo pieces of 1/3 round (cut from different positions of bamboo and having different diameter and thickness) were performed. The results suggested that over 78 % of the 108 total bamboo samples were flattened successfully which verified the correctness and feasibility of the process.
Zusammenfassung
Das Flachpressen von Bambusholz ist ein innovatives Formgebungsverfahren. Dabei wird auf beiden Seiten des Bambuskörpers jeweils eine horizontale Last aufgebracht, um der Zugspannung der inneren Bambusschicht beim Flachpressen entgegenzuwirken. In dieser Arbeit wird das theoretische Modell dieses Verfahrens entwickelt und vorgestellt. Ein Spezialgerät für das Aufbringen der notwendigen Lasten wurde konstruiert und verschiedene Versuchsserien an Bambusproben, die 1/3 des Halmumfangs umfassen (entnommen an verschiedenen Positionen mit unterschiedlichem Durchmesser und Dicke), wurden durchgeführt. Die Ergebnisse zeigen, dass über 78 % der 108 Prüfkörper erfolgreich flachgepresst werden konnten. Dies bestätigt die Richtigkeit und Eignung dieses Verfahrens.
Similar content being viewed by others
References
Ahmad M, Kamke FA (2011) Properties of parallel strand lumber from Calcutta bamboo (Dendrocalamus strictus). Wood Sci Technol 45:63–72
Anwar UMK, Paridah MT, Hamdan H, Sapuan SM, Bakar ES (2009) Effect of curing time on physical and mechanical properties of phenolic-treated bamboo strips. Ind Crops Prod 29:214–219
Chen GH (1985) Bamboo plywood: a new product of structural material with high strength properties. In: Proceeding of the 2nd international bamboo workshop, Hangzou, pp 337–338
Febrianto F, Sahroni, Hidayat W, Bakar ES, Kwon GJ, Kwon JH, Hong SI, Kim NH et al (2012) Properties of oriented strand board made from Betung bamboo (Dendrocalamus asper (Schultes f.) Backer ex Heyne). Wood Sci Technol 46:53–62
Hibbeler RC (1991) Mechanics of materials. Macmillan Publishing Company, New York
Malanit P, Barbu MC, Frühwald A (2011) Physical and mechanical properties of oriented strand lumber made from an Asian bamboo (Dendrocalamus asper Backer). Eur J Wood Prod 69:27–36
Matsumoto K, Yamauchi H, Yamada M, Taki K, Yoshida H (2001) Manufacture and properties of fiberboard made from moso bamboo. Mokuzai Gakkaishi 47:111–119
Mori M (1987) Process of flattening bamboo pieces utilizing microwave heating. Mokuzai Gakkaishi. 33:630–636
Obataya E, Kitin P, Yamauchi H (2007) Bending characteristics of bamboo (Phyllostachys pubescens) with respect to its fiber–foam composite structure. Wood Sci Technol 41:385–400
Qian J, Ye L (1999) Preliminary study on bamboo unfolding. J Bamboo Res 18(1):23–26
Shin FG, Xian XJ, Zheng WP, Yipp MW (1989) Analyses of the mechanical properties and microstructure of bamboo–epoxy composites. J Mater Sci 24:3483–3490
Zhang QS (1988) Studies of bamboo plywood I. The softening and flattening of bamboo. J Nanjing For Univ (Nat Sci Ed) 04:13–20
Zhou FC (1981) Study on physical and mechanical properties of bamboo. J Nanjing For Univ (Nat Sci Ed) 02:01–32
Acknowledgments
This project was supported by the Doctorate Fellowship Foundation of Nanjing Forestry University.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Liu, J., Zhang, H., Chrusciel, L. et al. Study on a bamboo stressed flattening process. Eur. J. Wood Prod. 71, 291–296 (2013). https://doi.org/10.1007/s00107-013-0670-y
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00107-013-0670-y