Academic Journal of Industrial Technology Innovation

NAMO PATTERN MOLD INNOVATION VIA 3D PRINTING FOR BATIK PRODUCTION IN NAKHON SI THAMMARAT

2026-03-26T10:44:13+07:00

The objectives of this research were 1) to design and develop Namo pattern molds using 3D printing technology, 2) to compare the thermal properties and material efficiency between ABS and PLA plastics in the batik production process, and 3) to develop and evaluate a knowledge set on mold fabrication for technology transfer to batik producers in Nakhon Si Thammarat province. Using a Research and Development (R&D) methodology, the study combined engineering testing with data collection from a pilot group and local batik producers. The results revealed that the developed molds were accurate to the traditional identity and reduced production costs by 94.60% compared to metal molds. ABS was found to be the most suitable material due to its high dimensional stability with a deformation rate of only 0.15% during immersion in hot wax, whereas PLA suffered structural failure. The developed knowledge set achieved an efficiency (E1/E2) of 93.20/90.00 with the highest level of user satisfaction. This research contributes a practical framework for integrating 3D printing technology into traditional crafts, enhancing self-reliance and creative competitiveness for community enterprises.

CREATION OF INTERACTIVE DIGITAL ART INNOVATION OF ‘LION DANCE’ AS INTANGIBLE CULTURAL HERITAGE UNDER THE FRAMEWORK OF CULTURAL SEMANTIC TRANSMISSION

2026-03-18T07:27:20+07:00

The objectives of this research were 1) to decode the local wisdom of the Foshan Lion Dance 2) to develop an interactive digital art innovation for transmitting intangible cultural heritage and 3) Evaluate the satisfaction of the interactive digital art. The methodology involved field surveys and data synthesis to construct a Cultural Gene Map, classified by dominant and recessive genes for creative design. The researchers transformed cultural data into design codes and developed an interactive digital system titled “Cai Qing Lion Dance.” Subsequently, system performance was tested, and user experience was evaluated. The sample group for data collection consisted of 407 museum visitors and online volunteers. The research instruments included a user satisfaction and experience questionnaire. Data were analyzed using descriptive statistics and One-way Analysis of Variance (One-way ANOVA). The results indicated that 1) The cultural gene structure of the Foshan Lion Dance consists of three main levels (Material Layer, Behavioral Layer, and Mental Layer) suitable for recreation. 2) The evaluation of the interactive digital art revealed that the sample group had a high level of satisfaction, with the highest mean of 4.24 and a standard deviation of 0.80. 3) The comparison of user experience classified by age group showed a statistically significant difference at the .01 level (F = 5.454, p < 0.01), with the youth group tending to be more interested in the interactive format than the elderly group, whereas gender did not significantly affect user experience. These findings demonstrate that the developed innovation can effectively promote the perception and transmission of the Lion Dance culture.

FINITE ELEMENT ANALYSIS OF GEOTEXTILE-REINFORCED EMBANKMENT ON PAK PANANG SOFT CLAY STABILIZED BY BERM ON PILES

2026-03-26T11:47:17+07:00

This study investigates the stability of geotextile-reinforced embankments constructed on Pak Panang soft clay and improved with berms on piles, aiming to prevent and mitigate road damage in Pak Panang District, Nakhon Si Thammarat Province, Thailand. The analysis was conducted using the finite element method implemented in PLAXIS 2D to simulate the behavior of embankments with a width of 9 m and heights of 1, 2, and 3 m. The subsoil profile consisted of topsoil, soft clay, and stiff clay layers. Five reinforcement scenarios were examined, including unreinforced embankments, geotextile reinforcement, berm reinforcement, pile reinforcement, and a combination of berm and pile reinforcement. The results indicate that embankment height significantly influences system stability. As the embankment height increases, the factor of safety decreases, while displacement and stress within the soft clay layer tend to increase. Pile reinforcement effectively transfers loads to the underlying stiff clay layer, thereby reducing settlement, whereas berm reinforcement enhances lateral resistance. Among the considered alternatives, the combined berm and pile system provides the most effective improvement, yielding the highest factor of safety and the best control of embankment deformation across all height conditions.

EFFICIENCY AND USER SATISFACTION EVALUATION OF A SEMI-AUTOMATED 2-IN-1 WALKING AND LIFTING ASSIST DEVICE FOR PHYSICAL THERAPY

2026-04-05T12:13:57+07:00

This research aimed to 1) evaluate the task performance and efficiency of a semi-automated 2-in-1 walking and lifting assist device for patient transfer and walking assistance in physical therapy, and 2) study the satisfaction of general users and physical therapists with the semi-automated 2-in-1 device. The sample group for this study consisted of 10 participants, including general users and physical therapists, selected through simple random sampling. The research instruments included task performance record forms and a satisfaction questionnaire. Data were analyzed using frequency, percentage, mean () and standard deviation (S.D.). The results revealed that: 1) In terms of task performance evaluation, the semi-automated device decreased the personnel workload by 50%, requiring only one caregiver compared to the conventional two-person method. Meanwhile, the participants were able to successfully accomplish the tasks within the simulated scenario as designed, recording an average simulated patient lifting time of 46.45 seconds and an average walking posture preparation time of 53.50 seconds. 2) Regarding the satisfaction with the semi-automated walking and lifting assist device for physical therapy, the overall satisfaction was at a high level ( = 4.48, S.D. = 0.17). When considering specific aspects, design received the highest satisfaction at the highest level ( = 4.57, S.D. = 0.31), followed by structure ( = 4.44, S.D. = 0.29) and usability ( = 4.44, S.D. = 0.26), both at a high level. In conclusion, the developed semi-automated 2-in-1 walking and lifting assist device is highly suitable in terms of structure, design, and usability. It can effectively serve as an alternative device to support physical therapy operations and enhance convenience in patient care.

APPLICATION OF BAMBOO POWDER COMPOSITES IN FRUIT PACKAGING

2026-03-31T15:46:48+07:00

Amid global efforts to mitigate carbon emissions and plastic pollution, the fruit packaging industry urgently seeks renewable and biodegradable alternatives to conventional petroleum-based materials. Although low-density polyethylene (LDPE) films and polypropylene (PP) trays possess excellent moisture resistance and structural stability, they lack biodegradability. Conversely, while corrugated cardboard and molded pulp are biodegradable, their structural integrity significantly degrades under high-humidity conditions, limiting their utility in cold-chain logistics. This study prepared and evaluated bamboo powder/PBAT/PLA composites for fruit packaging applications. Four bamboo powder particle sizes (60, 200, 400, and 800 mesh) were investigated under identical formulation conditions. The results revealed that particle size exerts a significant influence on the mechanical properties of the composites. Among the experimental groups, the 400-mesh bamboo powder-reinforced composite exhibited the optimal overall performance, characterized by a tensile strength of 26.30 ± 1.30 MPa, elongation at break of 16.20 ± 2.00%, flexural strength of 40.10 ± 3.10 MPa, flexural modulus of 3.00 ± 0.20 GPa, and impact strength of 13.80 ± 1.30 kJ/m². Compared to the 60-mesh group, the 400-mesh composite showed markedly improved tensile and flexural properties, indicating superior filler dispersion and interfacial compatibility within the polymer matrix. Based on the material performance data and the structural requirements for fruit packaging in China and Thailand, a “material parameters–structural functions–application pathways” framework was established. The analysis indicates that the composite has significant potential for tray supports and cushioning liners, whereas its application in external packaging structures necessitates further validation through compression and moisture-resistance testing. This study provides both experimental and application-oriented support for the development of low-carbon and biodegradable fruit packaging materials.

BASE DERIVED FROM RAP AND LATERITIC SOIL MIXED WITH CEMENT

2026-04-02T14:07:15+07:00

This research aims to: 1) study the development of compressive strength and durability performance of composite mixtures consisting of lateritic soil, Recycled Asphalt Pavement (RAP), and Portland cement type 1 for application as an innovative material in pavement base course construction; 2) analyze the engineering influence of controlled variables, including RAP content, optimum moisture content, cement content, and curing period, on the development of mechanical properties; 3) evaluate the compliance of the mixture properties compared to the pavement standards of the Department of Rural Roads; and 4) synthesize engineering and microstructural supporting data for the practical implementation of recycled materials in the construction industry. The research methodology utilized laboratory engineering tests by preparing mixture samples with RAP to lateritic soil weight ratios of 100:0, 0:100, 90:10, 80:20, 70:30, 60:40, and 50:50, and stabilized with cement at 0%, 1.5%, 3%, and 4.5% by weight. The testing process included modified compaction to determine maximum dry density and optimum moisture content, California Bearing Ratio (CBR) testing, and microstructural analysis using X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) to explain chemical bonding mechanisms. The research results revealed that the mixtures of Sample Set C (90:10 RAP to lateritic soil) and Sample Set D (80:20 RAP to lateritic soil), when stabilized with 3% cement, achieved CBR values of 152.52% and 148.87%, respectively, which significantly exceed the criteria specified by pavement base standards. This study demonstrates that integrating recycled pavement waste with cement enhances load-bearing efficiency and serves as an innovative alternative that adds value to waste materials for optimal resource management in the road construction industry.

ORGANIZATION CARBON FOOTPRINT ASSESSMENT AND HOTSPOT ANALYSIS OF GREENHOUSE GAS EMISSIONS AT NAKHON SI THAMMARAT RAJABHAT UNIVERSITY

2026-04-22T05:50:56+07:00

This research aimed to 1) assess the greenhouse gas emissions of Nakhon Si Thammarat Rajabhat University in accordance with ISO 14064-1 and the guidelines of the Thailand Greenhouse Gas Management Organization (Public Organization), 2) classify and analyze significant greenhouse gas emission sources within each scope, and 3) develop an organizational carbon footprint database to support greenhouse gas mitigation planning for the university. The study used activity data from the 2022 academic year together with greenhouse gas emission factors. Emissions from commuting by university personnel and students under Scope 3 were estimated using commuting pattern assumptions in combination with the university’s actual population data. The results showed that the university’s total net greenhouse gas emissions were 8,669.85 tCO₂eq per year, with an average emission intensity of 0.94 tCO₂eq per person per year. Scope 3 contributed the largest share of total emissions at 62.38%, followed by Scope 2 at 27.70% and Scope 1 at 9.92%. Hotspot analysis revealed that commuting by private vehicles was the largest emission source, accounting for 3,629.61 tCO₂eq per year, followed by electricity consumption in buildings and central facilities at 2,401.54 tCO₂eq per year, and solid waste disposal at 1,294.39 tCO₂eq per year. These findings reflect the characteristics of a regional university where limitations in public transportation make commuting a significant source of greenhouse gas emissions. The database developed from this study can support the formulation of greenhouse gas reduction policies and measures for the university, particularly in transport management, energy efficiency improvement, and waste management, in order to drive the university toward becoming a sustainable low-carbon organization.