Abstract Phase-field models of fracture allow the prediction crack propagation and patterns. In this contribution, externally driven processes in linear finite elasticity are investigated. Different approaches to consider pneumatic pressure materials with non-isotropic resistance studied, combined, examined detail. The versatility proposed is proven by a series numerical simulations two three d...

The generation of mixtures with precisely metered volumes is essential for reproducible automation of laboratory workflows. Splitting a given liquid into well-defined metered sub-volumes, the so-called aliquoting, has been frequently demonstrated on centrifugal microfluidics. However, so far no solution exists for assays that require simultaneous aliquoting of multiple, different liquids and th...

There has been increased interest in use of pneumatic actuators in many fields, such as medical care and welfare. In particular, proposed pneumatic soft actuator with soft material has many advantages such as low mass, flexibility, safety and user-friendliness. We therefore focus on the pneumatic actuators as a drive source of a rehabilitation device. This paper describes the concept, design, p...

The traditional management of obstructive salivary disorders has been replaced by minimally-invasive gland-preserving techniques including shock-wave lithotripsy, sialendoscopy, interventional radiology and endoscopically video-assisted trans-oral and cervical stone retrieval, of which sialendoscopy is considered to be the method of first choice. Primary endoscopically controlled stone extracti...

In this contribution, three nonlinear control strategies are presented for a two-degree-offreedom parallel robot that is actuated by two pairs of pneumatic muscle actuators as depicted in Fig. 1. Pneumatic muscles are innovative tensile actuators consisting of a fibrereinforced vulcanised rubber hose with appropriate connectors at both ends. The working principle is based on a rhombical fibre s...

To address the problems of high damage rate, low seeding accuracy, and poor generally in process, a general-purpose device was designed this study based on principle mechanical pneumatic combined seeding. The air-blowing-type cleaning seed unloading laid conditions for precise flexible In addition, single-factor experiments were performed seeds (e.g., soybeans, corn, rape-seeds) with different ...

An experimental study concerning particle behaviors in a horizontal dilute swirling flow pneumatic conveying was performed. Measurements of particle velocities and concentration profiles have been carried out using the photographic image technique. From the experimental results, it is found that mean particle velocity of swirling flow pneumatic conveying is lower than that of conventional pneum...

One strategy for actuating soft machines (e.g., tentacles, grippers, and simple walkers) uses pneumatic inflation of networks of small channels in an elastomeric material. Although the management of a few pneumatic inputs and valves to control pressurized gas is straightforward, the fabrication and operation of manifolds containing many (>50) independent valves is an unsolved problem. Complex p...

Following a brief survey of the historic development of pneuma­ tic prostheses the actual principles of prosthetic management in bi­ lateral shoulder disarticulation or bilateral amelia are explained. The active functions are re­ stricted to active pronation and supination, active gripping of the terminal device "hook" or "hand", combined with pneumatic locking of free swinging shoulder and elb...