Realisation of the reconfigurable pulsed high magnetic field facility and its scientific application at Wuhan National Pulsed High Magnetic Field Centre

Abstract

To generate arbitrary shape magnetic field waveforms for advanced scientific research, a reconfigurable pulsed high magnetic field facility (PHMFF) was developed at Wuhan National Pulsed High Magnetic Field Centre (WHMFC). First, the basic elements of PHMFF are introduced, and a ternary physical model composed of energy storage unit, magnet, transmission circuits and other auxiliary units is summarised to describe various magnetic field systems. Second, in order to realise the reconfiguration of magnetic field systems based on detailed elements, the control system with the ability of dynamic construction and control sequence reconfiguration is designed. On this basis, the PHMFF has been realised and various magnetic field systems are constructed to produce arbitrary shape magnetic field waveforms, such as half‐sine, ultra‐high, flat‐top and repetitive field pulses, which not only enhances the capability and efficiency of PHMFF, but also makes more scientific research possible in pulsed magnetic fields. So far, a peak magnetic field of 94.8 T, a flat‐top magnetic field of 64 T/10 ms and a repetitive magnetic field waveform of 20 T/60 Hz have been achieved, and some experiments and studies on the physical properties of materials have been carried out at WHMFC.

An Anisotropic Damage-Plasticity Constitutive Model of Continuous Fiber-Reinforced Polymers

“…Damage first occurs near the hole at 180 MPa, and as the load increases, the damaged zone diffuses towards the edge of the specimen. Figure 9b,c show the D e (4,4) attenuation of the second and seventh layers that are mainly subjected to transverse tension and in-plane shear. Damage initially occurs near the hole at approximately 120 MPa, and with an increasing load, the damaged zone diffuses towards the edge until laminate failure occurs.…”

“…Continuous fiber-reinforced polymers (FRPs) are progressively replacing metallic materials owing to their advantages in terms of their light weight, high stiffness, exceptional strength, and superior fatigue performance [1][2][3][4]. Realizing the full mechanical potential of FRPs necessitates precise structural analyses, which, in turn, require a robust constitutive modeling approach.…”

Frustrated magnetism of the spin-1 kagome antiferromagnet β-BaNi3(VO4)2(OH)2

“…Magnetization and ac susceptibility of β-NiH and β-NiD above 1.8 K were measured in a magnetic property measurement system (MPMS, up to 7 T, Quantum Design) down to 1.8 K, using powder samples of ∼20 mg. The high-field magnetization data in the temperature range of 1.6-8 K were collected in pulsed fields (up to 54 T) using a standard inductive method with a couple of coaxial pickup coils at Wuhan National High Magnetic Field Center [60], and calibrated by the low-field data measured in the MPMS. The specific heat data of β-NiH, β-NiD, β-ZnH, and β-ZnD above 1.9 K were collected in a physical property measurement system (up to 9 T, Quantum Design) using dry-pressed disks of the powders (∼4 mg).…”