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Heli Ma

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Articles by Heli Ma

Application of High Spatially Resolved Areal Array Velocity Measurement in the Cracking Behavior of Materials

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By Long Chen, Longhuang Tang, Heli Ma, Wei Gu
| Preprints.org
You are already at the latest version The dynamic behavior of heterogeneous materials, such as semiconductor materials, under impact loading is one of the experimental studies to improve the material properties. However, the non-uniformity of the material, such as grains and defects, is around 100 microns, which requires high-spatially resolved and high-dimensional measurement methods.
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Measurement of Ultra-High Speed by Optical Multistage Cascade Frequency Reduction Technology

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By Heli Ma, Long Chen, Wei Gu, Cangli Liu
| MDPI
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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The Side-Release Method Measures the High-Pressure Sound Velocity of Iron Using Line-Spatially Resolved DISAR

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By Long Chen, Cangli Liu, Longhuang Tang, Heli Ma
| MDPI
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Upconversion Photonic Doppler Velocimetry Based on Stimulated Brillouin Scattering

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By Long Chen, Cangli Liu, Heli Ma, Longhuang Tang
| MDPI
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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All-Fiber Pulse-Train Optical Frequency-Domain Interferometer for Dynamic Absolute Distance Measurements of Vibration

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By Heli Ma, Long Chen, Longhuang Tang, Cangli Liu
| MDPI
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Microwave Absolute Distance Measurement Method with Ten-Micron-Level Accuracy and Meter-Level Range Based on Frequency Domain Interferometry

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By Xing Jia, Heli Ma, Longhuang Tang, Shenggang Liu
| MDPI
Altmetric announcement Help format_quote Cite thumb_up ... Endorse Need Help? Find support for a specific problem in the support section of our website. Please let us know what you think of our products and services. Visit our dedicated information section to learn more about MDPI.
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Properties of Glass-Ceramics Prepared from Industrial Multi-Wastes

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By Chunlei Wu, Ye Sun, Zuoliang Zhang, Heli Ma
| MDPI
2. Experimental Scheme 2.1. Experimental Materials The raw materials used in this experiment include coal gangue, iron tailings, and high-carbon ferrochrome slag. Benxi, known as the capital of coal and iron, is rich in coal and iron resources. With the mining and washing process of raw coal, a large amount of coal gangue is produced.
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