The conveyorized duo-vec unit induces a Vector (multi-directional) field which detects both longitudinal and transverse defects.This specially designed unit is well suited for irregular part configurations on a wide variety of pieces up to 12 inches in length. This method combines the head and coil shots, thereby eliminating one inspection step, increasing production rates, and cutting costs.These units may be equipped with a wide variety of NDT units as required by the customer: Magnetic Particle AC and DC units up to 4,000 amps, Penetrant equipment and materials capable of fluorescent and constant dye inspection, portable ultrasonic and X-ray equipment. Combining this equipment, we can schedule a multiple approach to your materials, and discover both surface and sub-surface discontinuities. We are available for on-site inspection of power generating turbines, boilers, pressure, vessels, structural weld joints, crane assemblies and hooks, handling equipment and pipelines.Here we make a numerical study of the dynamic self-assembly of neutrally buoyant particles rotating in a plane in a viscous fluid.

The particles experience simultaneously a magnetic torque that drives their individual spinning motion, a magnetic attraction toward the center of the domain and flow-induced interactions. A hydrodynamic repulsion balances the centripetal attraction of the magnetized particles and leads to the formation of an aggregate of several particles that rotates with a precession velocity related to the inter-particle distance. 2 lb jar Mi-Glow™ pink particle. visible undFluorescent magnetic particles (WFMT).Wet fluorescent oil-based. Wet fluorescent water-based. WFMT with corrosion inhibitors. Visible wet magnetic particles. Wet visible oil-based. Red, black. Anti-foaming mix. Wetting agents. Corrosion inhibitor. Magnetic particle yokes. AC/DC yokes. AC-only yokes. Permanent magnet yokes. Battery powered yokes. The repulsion force between the particles is shown to be the result of the secondary flow generated by each particle at low but non-zero Reynolds number. Comparisons are made with analogous experiments of spinning disks at a liquid-air interface.