12.728 hasil
Menampilkan 61–80 · 1,10 detik · RSS
-
Artikel Jurnal
Verification of Countermeasures to Prevent Spalling of Shaft Walls during Deep Shaft Excavation:
This study examines the effects of rock spalling on support elements in order to prevent cracking and to ensure the integrity of the support system and safety during shaft sinking. When the ventilation shaft at the Horonobe Underground Research Center reached a depth of more than 250 m, severe rock…
-
Artikel Jurnal
Development of seats that improve riding comfort by utilizing air viscous resistance
This paper proposes a new seat structure that significantly improves the ride comfort of passenger cars. This new structure eliminates the conventionally used S-shaped spring and adopts a pan structure. Furthermore, the seat pad uses urethane foam, enclosing areas where load is concentrated with a…
-
Artikel Jurnal
Direct joining of bamboo and resin using a 3D printer (Verification of bonding strengthening due to anchoring effect of grooves formed by laser irradiation)
Bamboo–plastic direct bonding was attempted via a fused deposition modelling (FDM) typed three-dimensional (3D) printer, aiming to enhance bamboo use. Polylactic acid (PLA) filaments were employed in 3D printing, and bamboo specimens were grooved via laser processing, hoping to attain the anchoring…
-
Artikel Jurnal
Investigation of conditions for unsupervised classification of particle size using radiated sound in a ball mill (Application of SOM and influence of input data on classification)
In ball-mill grinding, the internal state of comminution is difficult to monitor because the mill is enclosed, and stop timing often depends on operator experience. This study investigates the analytical conditions for unsupervised discrimination of particle size using radiated sound from an…
-
Artikel Jurnal
Structural design of granular damper mechanism with emphasis on rebound suppression during landing
This paper investigates structural improvements for a passive landing shock-response control mechanism for aerial transport devices that combines a support spring with a granular damper. The primary objective is to suppress post-landing rebound to avoid attitude disturbance and mission…
-
Artikel Jurnal
Control of active magnetic bearing systems under base excitation (Fundamental study using an experimental setup with spring couplings)
Active magnetic bearings (AMBs) have generally been implemented on machines on rigid bases. However, when integrated into ships or vehicles, base excitation poses a significant challenge due to the inherently low stiffness of AMB systems. This study aims to reduce the vibration response of…
-
Artikel Jurnal
i-EyFuze: an eye-type External HMI that conveys a vehicle’s guidance intention
eHMI (external Human Machine Interface) that displays texts and signs as a method of conveying a vehicle’s guidance intention into pedestrians has been actively developed. However, current eHMI has problems where the vehicle’s intention and purpose are difficult to understand for pedestrians, or…
-
Artikel Jurnal
Experimental verification of direction estimate and microphone array configuration
The rapid proliferation of unmanned aerial vehicles (drones) has made ensuring safety through non-cooperative collision avoidance an urgent priority. Acoustic sensing offers a lightweight solution; however, detecting approaching rotorcraft, such as helicopters, remains challenging due to the high…
-
Artikel Jurnal
Schema matching method using large language models and graph path search (An industrial case study of production planning system integration)
One key challenge in the system integration business is improving the efficiency of schema matching. Schema matching is a task where two different schemas are given as input, and semantically corresponding columns are identified. Recent methods using large language models (LLM) outperform…
-
Artikel Jurnal
Preliminary design of a golf driver head focusing on face amplitude via origami-inspired geometric patterns
Recent regulations on the spring-like effect (SLE) in golf drivers cap the characteristic time (CT) at 239±18 μs, which limits performance gains derived solely from face deflection. This study investigates an alternative approach: the design of sole geometries inspired by origami engineering…
-
Artikel Jurnal
Development of technology for automated generation of CAD design rule check Program
Automated design rule checking (DRC) is a critical component of Design for X (DfX) strategies; however, establishing general-purpose automated systems in mechanical design remains difficult due to the high degrees of freedom in 3D shapes and the limitations of Large Language Models (LLMs) in…
-
Artikel Jurnal
Interval estimation of hysteresis variables based on sequential Bayesian updating with self-organizing learning
Accurate identification of hysteretic restoring‑force parameters in civil structures usually requires displacement or strain measurements that are rarely available in field monitoring. This study proposes a sequential Bayesian updating framework that estimates confidence intervals for seven…
-
Artikel Jurnal
Influence of steering intention on postural control strategies in older adults during sudden turning on a stand-up type PMV
In recent years, personal mobility vehicles (PMVs) have attracted attention as a new means of transportation for older adults. In general, PMVs have the advantage of being compact and maneuverable, but both the rider and vehicle have a high center of gravity, which may cause the rider to lose their…
-
Artikel Jurnal
Passivation behavior of Ni-based alloy 690 under impact fretting wear (Effect of temperature and displacement under electrochemical condition)
Ni-based alloy 690 exhibits excellent corrosion resistance in static environments; however the effect of corrosion on fresh surfaces is significant under tribocorrosion conditions, such as impact fretting wear in corrosive solutions. Understanding this behavior is crucial for accurately evaluating…
-
Artikel Jurnal
A precise and efficient method for analyzing two distinct singular stress fields at 3D interface corners in bonded structures and its application to evaluating adhesive strength in the scarf joints
This paper proposes an efficient method for evaluating the intensity of the singular stress field (ISSF) at an interface corner in a three-dimensional (3D) bonded structure, where two distinct real singularity indices are involved. Finite element method (FEM) analyses are conducted for both unknown…
-
Artikel Jurnal
Aggregate structures of magnetic Janus particle suspensions via three-dimensional Monte Carlo simulations
In the present study, we investigated the transition in aggregate structures of a suspension composed of magnetic Janus particles under a uniform magnetic field. Monte Carlo simulations were performed to investigate how the transition of aggregate structures depends on various factors, such as the…
-
Artikel Jurnal
Development of machining test method for 5-axis machining centers by turn milling
In recent years, the introduction of 5-axis machining centers has been increasing in order to improve productivity. Since the 5-axis machining center has two rotary axes, some geometric errors exist, which reduces the machining accuracy. There are several tests that calculate the geometric errors…
-
Artikel Jurnal
Study on the stiffness increase of twisted beams
Reducing the weight of beams is expected to reduce the total weight of structure, conserve energy and materials, and lower production costs. However, lightweighting generally leads to a decrease in stiffness. One problem arising from reduced stiffness is earthquake damage. Japan is a country prone…
Menampilkan maksimal 50 halaman. Persempit pencarian dengan filter untuk hasil yang lebih spesifik.