最新刊期
期 5 ， 2021
-
摘要：Digital design is the key technology to realize intelligent manufacturing furnishings. Based on the analysis of current issues in customized home design, this paper described the virtual reality (VR) display technology in digital design for customized furnishings, with specific details in the integrated module building technology and 3D virtual reality technology of the customized furnishing display system. With the development of VR display technology, the customer personal requirements and digital design technologies are closely combined, which greatly improves customer experiences and design efficiency. Promoting VR technology will benefit the transformation and upgrading of the Chinese furnishing manufacturing industry.关键词：customized furnishings;digital design;virtual reality display technology;intelligent manufacturing- 5
- |
- 3
- |
- 0
发布时间：2023-03-13 -
摘要：The wood machining (including the planning, shaping, drilling, mortising, sanding, and turning) performance of two hardwood species of Acacia melanoxylon and Michelia macclurei grown in China were evaluated. The results showed that two species had excellent machining performance, except that the drilling properties of the Acacia melanoxylon was between the first excellent and second good level. The overall machining performance was graded at the excellent level. The machining performance of Michelia macclurei wood were better than that of the Acacia Melanoxylon wood. Both two species of wood can be used for the manufacturing of furniture and other high value-added solid wood products.关键词：Acacia melanoxylon;Michelia macclurei;machining performance;machining defect- 90
- |
- 15
- |
- 0
发布时间：2023-03-13
SPECIAL REPORTS
-
摘要：In order to provide scientific support for the breeding selection and reasonable utilization of Chinese fir (Cunninghamia lanceolata), three Chinese fir clones were selected to investigate the variation of tracheid length, tracheid width, tracheid length-width ratio, tensile strength, and tensile modulus of elasticity (MOE) of single tracheid. The results showed that tracheid length, length-width ratio, tensile strength, and tensile MOE increased gradually from pith to the bark, and increased gradually from the breast height 1.3 m to 5.5 m in longitudinal variation. Single tracheid tensile strength and tensile MOE showed significantly positively correlation to their tracheid length and length-width ratio (P＜0.01). Tracheid morphology and tensile properties had significant differences in juvenile and mature wood.关键词：Chinese Fir;clones;single tracheid;tracheid morphology;tensile properties- 86
- |
- 19
- |
- 0
发布时间：2023-03-13 -
摘要：Pinus sylvestris veneer was used as the staining base material, which was stained with reactive dyes. Three groups of single-dyed samples and eight groups of mixed-dyed samples were obtained. Using the adaptive particle swarm algorithm (APSO) combining with the Stearns-Noechel model, the dyeing formula were predicted for eight groups of mixed-dyed samples. The results showed that the absolute deviation of formula obtained by APSO was less than 0.1, which was about 1/2 of the least square method and the traditional particle swarm algorithm. The optimization speed was efficient, and the number of iterations was about 60% of that of the traditional particle swarm optimization algorithm. The R-Y-B dyeing formulas of the three precious wood species obtained through by the optimized model were 0.192%, 0.419%, 0.082% for rosewood; 0.137%, 0.284%, 0.193% for wenge wood; and 0.336%, 0.581%, 0.204% for black rosewood. Using this formula of dyeing camphor pine veneer, the color difference between the dye fitting sample and the control sample were less than 2, and the error between the spectral reflectance of both was small. The performance of dyeing was fine.关键词：Stearns-Noechel model;adaptive particle swarm algorithm (APSO);wood veneer;formula prediction;absolute deviation of formula- 29
- |
- 7
- |
- 0
发布时间：2023-03-13 -
摘要：With the advantages of sustainability and low cost, chlorella protein was considered a suitable material to manufacture protein-based adhesives. In this paper, chlorella protein was modified by sodium hydroxide (NaOH), sodium dodecyl sulfate (SDS), and trimethylpropane triglycidyl ether (TTE), then made into adhesives. The testing results of the chlorella protein-based adhesives with various characterization methods showed that the modification destroyed the spherical structure of chlorella protein, and provided multiple cross-linking sites, thereby improving the bonding strength and the water resistance of the adhesive. Plywood samples were made with double-sided chlorella protein-based adhesive coating with a volume of 400 g/m2, under the conditions of hot-pressing process parameters, which were the pressure of 1.5 MPa, the temperature of 150 ℃, and the hot-pressing time of 8 min, The dry and wet bonding strengths of the plywood samples were 1.78 MPa and 1.11 MPa, which met the requirements of class II plywood in GB/T 9846—2015 "Plywood for general use".关键词：chlorella protein;protein-based adhesives;bonding strength- 64
- |
- 12
- |
- 0
发布时间：2023-03-13 -
摘要：The regression analysis method was used to analyze the relationship between the profile density distribution and thickness swelling rate, internal bond strength, static bending strength, surface bond strength of medium density fiberboard (MDF). The results showed that at the same mean density level, the density ratio of the surface-core layer of MDF has a very significant negative correlation with the thickness swelling rate (P＜0.001); the core density and the mean density have extremely significant correlation (P＜0.001) and significant positive correlation (P＜0.01) with the internal bonding strength respectively. The lowest density point of the core density was not necessarily the failure position of MDF boards. The peak density (PD) of the compression surface and the tension surface has no significant difference impact on the static bending strength. In the steep and flat type of MDF, the decrease of the peak area would weaken the effect of PD on the static bending strength. The static bending strength was extremely significantly affected by the mean density (P＜0.001). The profile density at the depth of the milling groove has an extremely significant effect on the surface bonding strength (P<0.001).关键词：medium density fiberboard;Profile density;density ratio of surface-core layer;peak density;physical and mechanical properties- 119
- |
- 50
- |
- 0
发布时间：2023-03-13 -
摘要：In order to optimize the manufacturing process, this study explored molded wood pallets made from particles of recycled wood and plywood. The effect of particle size and content ratio on the performance of molded wood pallets was examined. The research results showed that, under the same hot-press conditions, the higher the content of small-size shavings, the lower the surface density and the thickness expansion rate of water absorbing of the pallet. When the pallets were made with single-size particles, the bonding strength of the pallets and the bending strength of the stiffeners gradually increased as the size of the particles decreased respectively. When the wood pallets were prepared with mixed particles sizes and content ratios, the filling effect of small-size particles on the gap of large-size particles improved the bonding strength and the stiffeners' compressive strength respectively. It was recommended to choose a ratio containing more than 30% of combining medium-size particles and small-size particles in the production of wood pallets in order to obtain higher mechanical strength of the entire pallet and each part of the pallet respectively.关键词：molded wood pallet;particle size;physical and mechanical properties- 53
- |
- 20
- |
- 0
发布时间：2023-03-13 -
摘要：In order to provide theoretical references for the application of the accumulator in steel belt tension hydraulic system of continuous-presses, the effect of main parameters of the accumulator on the stability of the hydraulic system was analyzed by using AMESim simulation software. The results showed that the accumulator reduced the pressure impact of steel belt tension hydraulic system of continuous-presses. The appropriate pre-charge pressure and the optimum size of connecting pipe diameter enabled rapid responses and effective stabilities of the hydraulic system. The experiment data proved that the pressure value of steel belt tension hydraulic system was stable, and the synchronous accuracy of tension cylinders on both sides met the technical requirements of continuous-presses, when the pre-charge pressure of the accumulator was 16 MPa, and the connecting pipe diameter was 20 mm.关键词：continuous-presses;accumulator;AMESim simulation;Hydraulic system- 27
- |
- 9
- |
- 0
发布时间：2023-03-13
RESEARCH PAPERS
- 摘要：In this study, building structures of the existing houses were investigated in seismic zones and rural areas of China. Based on the survey data, this article analyzed the current situation and future capacity of wood structure market, discussed the problems, and proposed suggestions. This study aims to provide references for seeking economic, feasible, safe, and environment friendly building forms in China's seismic zones and rural areas, as well as to promote the development of China's wood-structure building industry.关键词：wood structure building;seismic zone;rural areas;investigation and analysis
- 54
- |
- 16
- |
- 0
发布时间：2023-03-13 -
摘要：The data from on-site investigation of ancient timber structures were taken as the research objects. The features of common wood damages of the ancient timber structures were analyzed by means of statistical and analytical research on exterior cracks, vertical deformation, hidden decay, internal decay, and insect damage of wooden components. The results indicated that the exterior cracks of wooden components did not affect the safety of the timber structure, but the effects of vertical deformation and bottom splits on long span beams need to be further analyzed. The wood decay often occured in embedded columns and purlins due to the conditions of high moisture and poor ventilation. The prevention of insect damage in wood components is more important than the afterward treatments, since the insects were brought into the structure mainly from the original wood components, repairing wood materials, or other wood-based products. Based on findings of the damage features and locations, which affected the building safety in the ancient timber building, the damage prevention and control plans were proposed to effectively conserve the ancient timber building.关键词：ancient timber structure;wood damage;prevention and control- 86
- |
- 17
- |
- 0
发布时间：2023-03-13 -
摘要：The authors used bibliometric methods for assessing 2889 articles in the wood science discipline published in Chinese journals from 2011 to 2020 based on CNKI database. The articles were classified as S781 by the CNKI database according to the National Library Classification. The main characteristics including titles, authors, origin organizations, keywords, published times, source journal features, citation rates, download rates, and national funding projects were analyzed. Results showed that the number of wood science papers published in Chinese journals was low, with the average citation rate of 4.25 times and the average download rate of 127.83 times; and the main authors and scientific organizations were aggregated in a limited scale. We invoke scientific research institutions, and science and technology administration departments to work together to enact policies, of promoting the prosperity of wood science disciplines and enhancing the development of scholar journals.关键词：wood science;the periodical;research paper;bibliometrics- 102
- |
- 17
- |
- 0
发布时间：2023-03-13
DISCUSSION ＆SUGGESTION
-
摘要：In order to solve the issues of heavy workload and low efficiency of manual grading and palletizing processes in the rotary peeling production line, an integrated device of automatic grading and palletizing was designed. Through analyzing the transmitting specification of adjacent veneers, image acquisition methods were designed to ensure full-coverage images of veneers. The classification rules were determined by the area of conveyor belt covered by the veneer in the image. The mechanical response distance was determined based on the action time, and the planar four-bar mechanism was used as the execution end to achieve integrated grading and palletizing processes in the production line. The whole action sequence of the grading frame was determined according to veneer manufacturing principles through peeling logs. The results of Adams kinematics simulation verify the feasibility of the four-bar mechanism.关键词：veneer grading;image recognition;crank and rocker mechanism;sequence of actions- 40
- |
- 12
- |
- 0
发布时间：2023-03-13 -
摘要：In order to accurately evaluate formaldehyde emission from wood-based flooring in ground heating system, a radiant heating simulation chamber was developed. This paper mainly introduced the structure and working concept of the device. Tests were performed in the radiant heating simulation chamber. The test results showed that the fluctuation range of temperature and relative humidity was within the allowable scale of the 1 m3 climate chamber method. There was a temperature gradient on the upper and lower surfaces of floor heating, which was consistent with the actual radiant heating system. The application test results showed that the formaldehyde emission measured by the simulated chamber was higher than that measured by the conventional 1 m3 climate chamber method, and lower than that measured by the climate chamber integral heating method, which presented truly formaldehyde emission of wood flooring used in ground heating system.关键词：radiant heating system;radiant heating simulation chamber;formaldehyde emission;temperature gradient;1 m3 climate chamber method- 30
- |
- 15
- |
- 0
发布时间：2023-03-13 - 摘要：The composition of the national standard system of test methods for physical and chemical properties of paint films for furniture surfaces were analyzed. The differences of technical contents in ISO and EN standards were stated in order to provide references for revising the national standards of test methods for physical and chemical properties of paint films for furniture surfaces.关键词：paint films for furniture surfaces;test method;standard
- 59
- |
- 20
- |
- 0
发布时间：2023-03-13
APPLIED TECHNOLOGY
- Address：Box 29，Research Institute of Wood Industry, No. 1, Dongxiaofu, Haidian District, Beijing Postal code：100091
- Tel：010-62889419 Email：mckx@caf.ac.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
- Total Visits：16680
0