Search Results (85)

Cutting beech plywood using abrasive water jet (AWJ) technology represents a significant area of research due to increasing demands for precision, quality, and environmental sustainability in manufacturing processes within the woodworking industry. AWJ technology enables non-contact cutting of materials without causing thermal deformation or mechanical damage, which is crucial for preserving the structural integrity and mechanical properties of the plywood. This article investigates cutting beech plywood using technical methods using an abrasive water jet (AWJ) at 400 MPa pressure, with Australian garnet (80 MESH) as the abrasive material. It examines how abrasive mass flow rate, traverse speed, and material thickness affect AWJ lag, which in turn influences both cutting quality and accuracy. Measurements were conducted with power abrasive mass flow rates of 250, 350, and 450 g/min and traverse speeds of 0.2, 0.4, and 0.6 m/min. Results show that increasing the abrasive mass flow rate from 250 g/min to 350 g/min slightly decreased the AWJ cut width by 0.05 mm, while further increasing to 450 g/min caused a slight increase of 0.1 mm. Changes in traverse speed significantly influenced cut width; increasing the traverse speed from 0.2 m/min to 0.4 m/min widened the AWJ by 0.21 mm, while increasing it to 0.6 m/min caused a slight increase of 0.18 mm. For practical applications, it is recommended to use an abrasive mass flow rate of around 350 g/min combined with a traverse speed between 0.2 and 0.4 m/min when cutting beech plywood with AWJ. This balance minimizes jet lag and maintains high surface quality comparable to conventional milling. For thicker plywood, reducing the traverse speed closer to 0.2 m/min and slightly increasing the abrasive flow should ensure clean cuts without compromising surface integrity. Full article

Next to solid wood, laminated particleboard is the most widely used wood-based material in the furniture industry. Ensuring the high quality of the laminate surface after machining is of critical importance for furniture manufacturers, particularly prior to the edge banding process, as this process significantly influences the final aesthetic and functional quality of panel elements. The objective of this review article is to gather and evaluate the current state of knowledge regarding the influence of machining process parameters and the physical and mechanical properties of laminated particleboard on machining quality. Particular emphasis is placed on the occurrence of laminate damage, commonly referred to as delamination, a prevalent defect in the furniture manufacturing sector. Both categories of influencing factors—process-related and material-related—are analyzed within the context of the three primary technological processes employed in the woodworking industry, namely drilling, cutting, and milling. The analysis revealed that a persistent research gap concerns the relationship between machining quality and material parameters, particularly in the case of milling—a process of critical importance in the furniture industry. Full article

Face milling with end-mill tools represents a solution for woodworking applications on small-scale or complex surfaces, but information regarding the surface quality per specific tool type, wood material, and processing parameters is still limited. Therefore, this study examined the surface quality of tangential oak and maple CNC face-milled with two end-mill tools—straight-edged and helical—for three values of stepover (5, 7, 9 mm) and two cutting depths (1 and 3 mm). The surface quality was analyzed with roughness parameters, roughness profiles, and stereomicroscopic images and was referenced to that of very smooth surfaces obtained by super finishing. The helical end mill caused significant fiber tearing in maple and disrupted vessel outlines, while prominent tool marks such as regular ridges across the grain were noticed in oak. The best surface roughness was obtained in the case of the straight-edged tool and minimum stepover and depth of cut, which came closest to the quality of the shaved surfaces. An increase in the cutting depth generally increased the core surface roughness and fuzziness, for both tools, and this trend increased with an increase in the stepover value. The species-dependent machining quality implies that the selection of tool geometry and process parameters must be tailored per species. Full article

Spalted wood is a natural material characterized by distinctive colors and patterns from wood decay fungi as they digest their substrate and leave behind colored secretions. As an art form, spalted wood was used heavily in western Europe from the 1400s–1600s; however, its use in other parts of the world remains deeply understudied, even in cultures where wood played a dominant social role. The use of spalted wood in China, in particular, is unknown, despite a growing interest by Chinese researchers in modern spalting practices and their potential commercial value. This study systematically reviews the potential historic use, current artistic value, environmental significance, and future application prospects of spalted wood for a Chinese market. By integrating historical records, modern scientific research, and insights from traditional Chinese woodworking, the study provides a comprehensive analysis of the aesthetic and functional value of spalted wood for Chinese markets. The findings indicate that the random and non-reproducible nature of spalted wood imbues it with exceptional artistic appeal and collectability, which has a strong potential to appeal to Chinese furniture design, decorative arts, and high-end interior applications. Furthermore, spalted wood demonstrates considerable potential for resource recycling by turning otherwise non-commercial, pale, white woods into higher value options—a phenomenon that has been studied across Europe and North America. In China, this has the potential to reduce wood waste and advance ecological design. However, challenges remain in fungal infection control, processing techniques, and market adoption. With ongoing advancements in biotechnology and manufacturing processes, spalted wood is poised to gain greater recognition in Chinese art, design, and cultural innovation while also contributing to green manufacturing and sustainable development. Full article

This study explores how integrating design processes into the native timber industry of southern Chile, specifically in the Araucanía and Los Ríos regions, can improve the value chain and promote sustainability. Chile’s native wood sector is constrained by fragmented value chains, underutilised small-diameter logs and limited market confidence. These challenges jeopardise forest sustainability and rural livelihoods, underscoring the imperative to find innovative solutions to reinvigorate the sector. A market gap analysis revealed critical limitations in the current industry, including low supply, limited demand, and weak technological development, especially in producing value-added wood products. The research identified over 417,000 hectares of second-growth roble (Nothofagus obliqua)-raulí (Nothofagus alpina)-coigüe (Nothofagus dombeyi) forests suitable for sustainable management. Interviews with woodworking SMEs showed that 66% already use native timber, yet 46% of the projected volume remains underutilised due to the prevalence of short and thin logs. In response to these challenges, the study developed innovative prototypes such as interior claddings and lattices made from smaller, underutilised logs. These designs were evaluated and validated for use in residential and public buildings, demonstrating their potential to meet new market demands while promoting resource efficiency. The results show that, whilst there is a clear need for better infrastructure, workforce training, and commercial planning to support product adoption, design-driven innovation offers a promising path forward enhancing the industry’s competitiveness. Demonstrating how design-led integration can transform under-used native timber into high-value products, simultaneously driving sustainable forest stewardship and local economic growth. Full article

Many scholars have claimed that the skills depicted by Zhuangzi can lead to self-transcendence of experiencing and attaining the Dao. However, this view is open to question. Based on a comprehensive reading of the received text of Zhuangzi, this paper attempts a comprehensive reinterpretation of its allegories of skills, including “Cook Ding Butchering an Ox”, “The Hunchback Catching Cicadas”, “The Ferryman Handling a Boat”, “The Man of Lüliang Swimming in the Torrent”, “Woodworker Qing Carving a Bell Stand”, “Artisan Chui Drawing Circles with His Fingers”, “Wheelwright Bian Chiseling Wheels”, “Bohun Wuren Demonstrating Archery”, and “The Old Metalworker Forging Weapons”. This study argues that the emphasis of these skill allegories is not on extolling skills but on pointing towards self-transcendence in a metaphorical way. Just as Mark Twain once likened an apple peel to the Mississippi River, the depiction of skilled performance and its contexts primarily serves as a vivid and illustrative vehicle for explaining self-transcendence rather than constituting self-transcendence itself. Logically speaking, exercising skills requires intentionality, whereas self-transcendence in Zhuangzi’s sense demands complete forgetfulness and a state of non-attachment. Since the states of intentionality and non-attachment are contradictory, the former does not necessarily enable the latter. Thus, the skill in Zhuangzi cannot directly lead to self-transcendence. The skill allegories in Zhuangzi represent the authors’ subjective elaborations, rooted in the focus and tacit understanding inherent in skill activities, and should not be interpreted in an overly mystical light. Full article

This study explores the application of Eastern philosophy in craft innovation education, identifying opportunities for interdisciplinary learning. Drawing on the I Ching and Laozi’s thought, it examines human needs in craft across three dimensions: Qi-form (material), Xin-form (psychological), and Dao-form (philosophical). Taiji theory’s Yin–Yang balance highlights the importance of interdisciplinary thinking in craft innovation. This study introduces the “Spiral Innovation Theory” as a framework for craft education, implemented in the 2024 Taiwan Craft Academy Summer Program with 43 participants. The curriculum covered lacquer, wood, metal, and ceramics, employing a multi-mentor system. Using the Learning Motivation Strategies Scale, Imaginative Thinking Scale, and interviews, the findings reveal that different crafts foster distinct creative abilities. The ANOVA results show woodworking enhances ideation, metalwork and ceramics improve fluency, ceramics and woodworking strengthen flexibility, while woodworking and lacquer work boost creativity. A significant correlation between learning motivation and imagination was found. These findings offer insights into future craft education, advocating the dual mentorship model as a strategy for interdisciplinary innovation. Full article

This study presents a multi-analytical investigation of the wooden components from Khufu’s Second Solar Boat, one of the valuable archaeological discoveries in ancient Egypt. The research integrates advanced imaging and analytical techniques to identify wood species, assess deterioration patterns, and characterize the fungal and bacterial biodeteriogens. The initial visual examination documented the state of preservation at the time of discovery. Subsequently, the identification of the wood species was carried out. The deterioration status was assessed using a variety of tools, including scanning electron microscopy (SEM) and high-resolution synchrotron radiation computed microtomography (SR-μCT) for morphological alterations, X-ray diffraction (XRD) for crystallinity changes and Fourier-transform infrared spectroscopy (FTIR) to assess chemical degradation indexes of wood. Moreover, molecular techniques were used to identify and characterize the presence of biodeterioration agents. Results indicate that ancient craftsmen used cedar wood for the boat construction. The analysed samples exhibited advanced biotic and abiotic degradation, as evidenced by microbiological assessments, XRD measurements of cellulose crystallinity, FTIR indices, SEM micrographs and SR-μCT data. These results provide crucial insights into the long-term degradation processes of archaeological wood in arid environments, enhancing our understanding of ancient Egyptian woodworking practices and informing future conservation strategies for similar artifacts. Full article

This work identifies relevant sustainability targets from the UN’s Sustainable Development Goals (SDGs) for main value chains of biobased products, categorized into four dimensions: environment, circularity, social, and economics. Of the 17 Sustainable Development Goals (SDGs), 85 targets were identified as aligning with sustainability criteria for industrial biobased systems. Six sectors with biobased activity were analyzed, chemicals, construction, plastics, textiles, woodworking, and pulp and paper, each represented by 3–5 value chains. These value chains were chosen based on certification availability, production scale in Europe, economic importance, and potential to replace fossil-based products. In total, 25 value chains were assessed qualitatively for their positive, negative, or neutral impact on each selected SDG target, using public data like EU reports, life cycle analyses, and expert insights. The results showed that 43 SDG targets were directly applicable to the value chains, with higher synergies for those using waste as feedstock over primary resources like crops or virgin wood. Overall, advances in technology and holistic approaches are paving the way for biobased solutions to replace resource-intensive, petroleum-derived materials and chemicals. These alternatives offer additional advantages, such as enhanced recyclability, biodegradability, and reduced toxicity, making them promising candidates for sustainable development. This study underscores that technological progress and a comprehensive approach can further advance sustainable biobased solutions in industry and have a relevant positive impact on various SDGs. Full article

High-precision noise radiation characterization is essential for designing circular saw blades aimed at vibration and noise reduction. However, previous studies have generally overlooked the effects of thermal stress, centrifugal force, and cutting force on the acoustic performance of saw blades during the cutting process. This paper proposes a multi-physics field coupling analysis method based on FEM/BEM joint simulation technology. By performing thermal-force coupling analysis to obtain the sawing vibration response, the resulting vibration acceleration is introduced into the acoustic–solid coupling model to predict the frequency-domain characteristics and spatial distribution of sawing noise. The validity of the simulation results is verified through sawing noise test experiments. The study shows that the circular saw blade radiates the most noise when sawing in the mid-frequency band from 500 Hz to 8000 Hz, while the noise radiation efficiency is lower in both the low-frequency band and the high-frequency band. The multi-physical field coupling simulation method can significantly improve the calculation accuracy of the frequency-domain characteristics of sawing noise. The vibration noise of the circular saw blade shows clear directional distribution at different excitation frequencies, while the directionality of the experimentally measured noise is less distinct. Furthermore, based on the noise radiation characteristics, this study explores the design strategies of noise reduction slots and sound barriers, which provide references for the noise control and vibration damping design of circular saw blades. Full article

The eco-friendly lifestyle has gained traction at individual and industrial levels, especially following Europe’s “Green Deal”. While the woodworking industry in Latvia has made strides toward waste-free production, wood processing still produces by-products that require effective utilization. Instead of burning these residues for energy, a sustainable option is repurposing birch bark into suberinic acids adhesive, which is environmentally friendly and safe for humans. Research shows that thermally modified aspen, birch, and poplar veneers treated using the Termovuoto process at 160 °C/50 min, 204 °C/120 min, 214 °C/120 min, 217 °C/180 min, and 218 °C/30 min can be bonded with this adhesive and meet the EN 314-2:1993 standard for outdoor applications classified as Class 3 bonding. However, hydrothermally modified veneers treated at 160 °C 50 min do not bond successfully, failing to meet Class 3 requirements. Full article

To address the anisotropy of mechanical properties and the challenge of removing support materials in lattice structures fabricated using fused deposition modeling (FDM), this study is inspired by traditional woodworking mortise and tenon joints. A hexagonal interlocking mortise lattice structure was designed, and mortise and tenon lattice structures (MTLSs) with various parameters were fabricated. Compared with the traditional integrated forming lattice structure (IFLS), the MTLS exhibits maximum reductions in side surface roughness (Ra), printing time, and material consumption of 74.87%, 25.55%, and 52.21%, respectively. In addition to enhancing surface quality and printing efficiency, the MTLS also exhibited superior mechanical properties. The uniaxial compression test results show that the specific strength, energy absorption (EA), and specific energy absorption (SEA) of the MTLS exhibit maximum increases of 51.22%, 894.59%, and 888.39%, respectively, compared with the IFLS. Moreover, the effects of strut angle and thickness on the lattice structure were analyzed. Smaller strut angles and larger strut thicknesses endowed greater strength, while smaller angles contributed to higher energy absorption. This study proposes a novel approach for designing lattice structures in additive manufacturing. Full article

In recent years, the demand for forest products has remained high, which, in turn, has intensified competition for timber exports. The Russian Far East is a region with one of the largest forest areas in the country; however, the competitiveness of the Far Eastern Federal District (FEFD) in wood forest product exports remains an open question. The purpose of this study is to assess and compare the competitiveness of the timber industry in the FEFD using a comprehensive competitiveness index. In this study, international trade indices were calculated on the basis of export and import data on wood forest products. Then, the indices were weighted by the methods of entropy weight and coefficient of variation. Finally, the two methods were combined, and a comprehensive competitiveness index of the Russian region’s timber industry was derived. The results show that the FEFD maintains competitiveness in the wood processing industry. The calculation results for the competitiveness of the woodworking industry will help to strengthen the attractiveness of trade in the Far Eastern Federal District and will contribute to the strengthening of positions in the domestic market and the expansion of trade relations of the FEFD in the international market. All of this will form new trade chains, which, in turn, will have a positive impact on the economic development of both the region itself and the countries that have trade relations with the FEFD in the sphere of export and import of wood products. Full article

The manipulator has been widely used in the wood processing industry; the main problem currently faced is optimizing the motion trajectory to enhance the processing efficiency and operational stability of the woodworking manipulator and worktable. A 5-7-5 piecewise polynomial interpolation method is proposed to construct the spatial trajectories of each joint. An improved non-dominated sorting genetic algorithm (INSGA-II) is proposed to achieve a time–jerk multi-objective trajectory planning that can meet the dual requirements of minimal processing time and reduced motion impact. In order to address the limitations of the standard NSGA-II algorithm, which is prone to local optima and exhibits slow convergence, we propose a good point set method for multi-objective optimization population initialization and a linear ranking selection method to refine the parent selection process within the genetic algorithm. The improved NSGA-II algorithm markedly enhanced both the uniformity of the population distribution and convergence speed. In practical applications, selecting suitable weightings to construct a normalized weight function can identify the optimal solution from the Pareto frontier curve. A high-order continuous and smooth optimal trajectory without abrupt changes can be obtained. The simulation results demonstrated that the 5-7-5 piecewise polynomial interpolation curve effectively constructed a high-order smooth processing trajectory with continuous and smooth velocity, acceleration, and jerk, free from discontinuities. Moreover, the INSGA-II algorithm outperforms the original algorithm in terms of convergence and distribution, enabling the optimal time–jerk multi-objective trajectory planning that adheres to constraint conditions. Optimized by the improved NSGA-II algorithm, the optimal total running time is 4.5400 s, and the optimal jerk is 17.934 $\mathrm{m}\left(\mathrm{r}\mathrm{a}\mathrm{d}\right)/{\mathrm{s}}^3$. This provides a novel approach to solving the inefficiencies and operational instability prevalent in traditional woodworking equipment. Full article

Many factors affect screw withdrawal resistance (SWR), including screw size, embedment depth, the pre-drilled hole’s diameter, dimensional accuracy, and the furniture pieces’ material properties being joined. While prior research has extensively examined the influence of these factors, this study aimed to explore a neglected factor: how drill bit wear impacts pilot hole quality and subsequent SWR. The experimental setup included pinewood samples with pre-drilled 5 mm diameter blind pilot holes with a depth of 45 mm. The holes were equally divided into two groups: one drilled with a sharp bit, the other with a blunt bit. Euro-type coarse furniture screws (7 mm major diameter, 4 mm minor diameter, 3 mm pitch) were screwed into all holes. Subsequently, SWR was measured using a universal testing machine. Results show a statistically significant decrease in SWR when using the blunt drill bit. This phenomenon can be explained by excessive local material degradation, increased surface roughness, and disrupted hole dimensional accuracy, collectively hindering SWR. The study’s findings offer insights into how excessive drill bit wear impacts the screw withdrawal capacity of pinewood, informing best practices in furniture and construction. Full article