Surface measurement of binderless bio-composite particleboard through contact angle and fractal surfaces

Danish, Mohammed; Nadhari, Wan Noor Aidawati Wan; Tauheed, A.; Hashim, Rokiah; Sulaiman, Othman; Ahmad, Mehraj; Karim, Norani Abd; Salleh, Kushairi Mohd

doi:10.1016/j.measurement.2019.03.049

Cited by 18 publications

(5 citation statements)

References 20 publications

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“…Recently, the fractal contact theory has been widely used to characterize interface (Danish et al, 2019; Ge and Chen, 1999; Guan et al, 2018) and wear condition (Frérot et al, 2018; Gong et al, 2019; Sahoo and Chowdhury, 2002). Particularly, by considering the self-affine fractal features, Majumdar and Bhushan (1991) and Wang and Komvopoulos (1994a, 1994b) investigated the relationship (i.e.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of bolt looseness using piezoelectric transducers: Three-dimensional numerical modeling with experimental verification

Ning

Wang

Song

2020

Journal of Intelligent Material Systems and Structures

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Across multiple industries, bolted connections have been widely used to hold different parts and components together, due to their advantages such as convenient use and low cost. However, bolt looseness may lead to disastrous consequences if not promptly detected. In this article, a novel numerical modeling is proposed to simulate the piezoelectrically enabled active sensing method that can monitor the looseness of bolted connection, and this investigation can help us better understand the mechanism of the active sensing of a bolted connection. Compared to prior investigations, the main contribution of this article is that we develop a new three-dimensional modeling method on microscopic roughness of bolted interface by using the fractal contact theory. The numerical results, backed by experimental verification from the testing on a bolted joint, reveal that the received signal peak amplitude is proportional to the bolt preload. This phenomenon can be attributed to the enlarging actual contact area with the increasing preload, since a larger contact surface can enhance stress wave propagation. Moreover, the proposed numerical modeling has better performance than similar research in the past, which can provide guidance for future investigations on bolt looseness monitoring.

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Section: Introductionmentioning

confidence: 99%

Monitoring of bolt looseness using piezoelectric transducers: Three-dimensional numerical modeling with experimental verification

Ning

Wang

Song

2020

Journal of Intelligent Material Systems and Structures

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“…70 °, Table 4) than VS_P (c.a. 56 °, Table 4), which may indicate a lower tendency to the penetration of oils and fats (Candan et al, 2012;Wang et al, 2017;Danish et al, 2019). Although surface free energy seems to corroborate this tendency, with VS_P reaching the highest value (c.a.…”

Section: Particleboard Performancementioning

confidence: 90%

Binderless particleboards obtained 100% from winery by-products for the packaging industry

Fernandes,

Lopes,

Ferreira

et al. 2024

Front. Food. Sci. Technol.

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The valorization of bioeconomy by-products holds immense significance in achieving sustainability goals and fostering resource efficiency, not only to reduce the amount of waste generated but also to significantly decrease the carbon footprint associated with several industrial fields, by promoting circular economy. The wine industry is not only one of the major contributors for world’s economy but also a great producer of by-products, with no valorization process associated. Grape stalks are a great source of chemical molecules, as polyphenols, that can be applied in the production of bio-adhesives. In the present work, grape stalk particles were used as raw material to obtain a highly rich extract with bonding properties through solid/liquid extraction. Different extraction agents were tested (water, NaOH, and Na2CO3) at varied concentrations (0.1%, 0.5%, and 1.0%, respectively). Additionally, extracts were chemically characterized, and the bonding capacity was also evaluated. Using NaOH 1.0%, an extraction efficiency of 8.9% and a total content of polyphenols of 1.4% were achieved. Moreover, all extracts presented an interesting bonding capacity (>1.0 MPa) by hot-press at 120°C for 120 s. The composite panel produced using grape stalk adhesive and vine strain particles fulfills the requirements for type P1 particleboards in terms of internal bond strength, reaching 0.66 MPa. The mechanical and wettability properties of composite material allow foreseeing a promising application in the food packaging industry.

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“…Contact angle measurements were made with the computer program prepared using Eqs. (2)(3)(4)(5)(6). The realized contact angle measure-…”

Section: New Methods (Full Angle Methods (Fam))mentioning

confidence: 99%

“…The contact angle, which occurs when solids are wetted by liquids, has an important place in many application areas such as lubrication, coating, printing, waterproofing and detergent [1,2]. A wide range of applications has emerged, from materials such as self-cleaning glass by controlling wettability to high-tech areas such as microfluidic control, corrosion resistance, water-oil separation, medical material production, implant dental technology [3][4][5][6][7]. Researchers are working on increasing the wettability in order to ensure that the denture material can be better adhered to in the mouth.…”

Section: Introductionmentioning

confidence: 99%

A new approach to contact angle measurement and effects of evaporation on the contact angle

Cakir

2024

Rev. Mex. Fís.

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The solid material's wettability behavior is determined by the contact angle value. The wettability of materials is critical in the coating, lubricating, and insulating industries. In high-tech industries including corrosion resistance, water-oil separation, medical material production, implant technology, and friction reduction, the contact angle is very important. A new method called the full angle method was used to measure the contact angle and compared with current methods. The wettability behavior of plexiglass, which is employed in a variety of applications ranging from lighting to decorating, and industrial designs to accessory production, was explored in this study. The measurement of the contact angle was done by dropping 1.8 M (molar) of saltwater over the plexiglass materials. In order to examine the effect of evaporation on the contact angle, changes in contact angle, height and baseline were investigated depending on the waiting time.

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Surface measurement of binderless bio-composite particleboard through contact angle and fractal surfaces

Cited by 18 publications

References 20 publications

Monitoring of bolt looseness using piezoelectric transducers: Three-dimensional numerical modeling with experimental verification

Monitoring of bolt looseness using piezoelectric transducers: Three-dimensional numerical modeling with experimental verification

Binderless particleboards obtained 100% from winery by-products for the packaging industry

A new approach to contact angle measurement and effects of evaporation on the contact angle

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