Qingdao Academy of Intelligent Industries

Mode-Dependent Differential-Algebraic Kinematic Modeling of a Four-Wheel Wall-Climbing Robot on Cylindrical Inner Surfaces

Multi-wheel wall-climbing robots operating on cylindrical inner surfaces are subject to configuration-dependent wheel-surface contacts and nonholonomic rolling constraints, making planar differential-drive or fixed-contact kinematic models insufficient when the active contact top...

Design of a load-responsive mechanical pressure limiter for overload protection in hydraulic actuators

To improve the overload protection performance of hydraulic actuators under dynamic load variations, a load-responsive mechanical pressure-limiting device is proposed with a wheel loader as the application background. The device integrates a pressure-sensitive element, a pressure...

Dynamic contact angle model of bionic micro-abrasive droplet wetting and experimental study

Micro-grinding techniques are widely used in orthopedic surgeries involving bone tissue removal. However, insufficient dynamic wetting of coolant droplets on rotating micro-grinding tools can disrupt coolant coverage and interfacial heat transfer, causing thermal damage during bo...

Thermo-mechanically driven dynamic recovery and residual stress relaxation in high-efficiency deep grinding of single-crystal superalloys

High-efficiency deep grinding (HEDG) is an important process for machining single-crystal superalloy turbine blades, whereas the severe thermo-mechanical coupling and ultrahigh strain rates involved make the evolution of subsurface residual stress difficult to predict accurately....

Reliability Analysis of TPMS Structures Considering Uncertainties in Operating Conditions

ABSTRACT Triply periodic minimal surface (TPMS) porous structures show considerable promise for lightweight load‐bearing implants. To address the fatigue reliability of radially graded gyroid‐type TPMS Ti‐6Al‐4V scaffolds under unavoidable uncertainties in loading and material pr...

A ROS 2-Based Robotic Platform for Mobile Occupant Sensing and Edge Perception in Buildings

Occupant-centric building operation requires timely information on occupant states and local indoor conditions, but fixed sensors provide limited spatial coverage, and wearables depend on user participation. This study develops a Robot Operating System 2 (ROS 2)-based wheeled mob...

Differential modulation of rumen function and bacterial communities in lambs by silage type and nitrogen source

The present study evaluated the effects of sweet sorghum silage as an alternative forage and slow-release urea as a non-protein nitrogen source on ruminal function and bacterial communities in lambs, as determined by enzymes activity, fermentation profiles, and microbial communit...