A Piezoelectric‐Driven Rock‐Drilling Device for Extraterrestrial Subsurface Exploration

Li, He; Shen, Yi; Wang, Qingchuan; Wang, Yinchao; Bai, Deen; Deng, Zongquan

doi:10.1155/2018/8368012

Cited by 12 publications

(4 citation statements)

References 23 publications

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“…The aspect of focused and flexible coupling of energy, in turn, is addressed by ultrasonic processes. Although complex process control is necessary, demonstrators proved the general feasibility and practicability [58][59][60][61][62]. In fact, drilling systems considering the tool, the tool guidance and the machine technology, are available for surface area applications and as deep drilling units up to TRL 6 [57].…”

Section: Trade-off and State Of The Artmentioning

confidence: 99%

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Seidel

Teicher

Ihlenfeldt

et al. 2023

Preprint

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In recent years, space agencies like NASA and ESA have expanded their research activities in the field of Manufacturing in Space. These measures serve to reduce limitations and costs through fairing size, launch mass capabilities or logistic missions. The objective, in turn, is to develop technologies and processes that enable on-demand manufacturing for long-term space missions and on other celestial bodies. Within these research activities, in-situ resources utilization (ISRU) and recycling are major topics. Consequently, this paper considers what is required on-demand in future space missions and provides a corresponding overview of the in-space manufacturing state of the art. The latter is significantly influenced by research activities in the field of additive manufacturing, with only a few results available in the field of subtractive processing. In conclusion, a novel approach for in-situ resource utilization based subtractive manufacturing in space is presented to supplement the existing processes. The approach presented is based on a water abrasive jet process, with regolith simulate being used as the abrasive to separate metal and glass.

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Section: Trade-off and State Of The Artmentioning

confidence: 99%

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Seidel

Teicher

Ihlenfeldt

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The aspect of focused and flexible coupling of energy, in turn, is addressed by ultrasonic processes. Although complex process control is necessary, demonstrators proved the general feasibility and practicability [60][61][62][63][64]. In fact, drilling systems, considering the tool, the tool guidance and the machine technology, are available for surface area applications and as deep drilling units up to Technology Readiness Level (TRL 6) [59].…”

Section: Subtractive Machining State Of the Art And Trade-offmentioning

confidence: 99%

Towards Lunar In-Situ Resource Utilization Based Subtractive Manufacturing

Seidel,

Teicher,

Ihlenfeldt

et al. 2023

Applied Sciences

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In recent years, space agencies, such as the National Aeronautics and Space Administration (NASA) and European Space Agency (ESA), have expanded their research activities in the field of manufacturing in space. These measures serve to reduce limitations and costs through fairing size, launch mass capabilities or logistic missions. The objective, in turn, is to develop technologies and processes that enable on-demand manufacturing for long-term space missions and on other celestial bodies. Within these research activities, in-situ resource utilization (ISRU) and recycling are major topics to exploit local resources and save transport capacity and, therefore, costs. On the other hand, it is important to carefully consider which items can be brought and which must be manufactured on the Moon. Consequently, on-demand needs in future space missions are considered regarding frequency, raw material and required manufacturing processes according to investigations by ESA and NASA. In conclusion, manufacturing in space state-of-the-art shows a strong focus on additive processes, primarily considering semicrystalline or amorphous plastics. The subtractive processing of metallic or ceramic materials, in turn, currently represents a research gap. Consequently, an approach for in-situ resource utilization-based subtractive manufacturing in space is presented to supplement the existing processes. The latter uses a high-pressure jet of water, with regolith simulate as abrasive in suspension, being directed at the workpiece, which is moved to separate metal and glass. Proof-of-concept results are presented, including suitable process windows, achieved cutting geometries, as well as the effects of parameter variations on the system technology and consumables used. The focus of the investigations supplements the general requirements for the design of machine tools for space applications with inertial process-specific boundary conditions as a step towards higher technology maturity.

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“…The above study shows that ultrasonic percussive drills can achieve superior drilling effects under low-power conditions. However, the mechanism of rock failure is not clear, which limits the application of these drills in practical drilling projects [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Amplitude and Confining Pressure on Granite Failure under Ultrahigh Frequency (UHF) Impact Based on Radiation Temperature

Zhang

Dajun

2022

Geofluids

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Ultrahigh frequency impact technology has great potential to break hard rocks with lower energy consumption. Based on the infrared nondestructive testing technology, the effects of load (i.e., amplitude) and boundary (i.e., confining pressure) conditions on granite damage under ultrahigh frequency impact have been investigated to promote the application of this technology in rock engineering. Experimental results demonstrate that the evolution law of the maximum radiation temperature on granite surface reflects the granite damage state. Under ultrahigh impact, granite specimens are damaged effectively with the impact amplitude exceeding 32 μm, and the failure mode of the specimen is changed by the confining pressure. Depending on Griffith’s theory, the extension angle of the fatigue crack changes from 60 to 30 degrees with increasing confining pressure. And the transverse fracture occurs in the upper part of the specimen under ultrahigh frequency impact subjected to confining pressure. This research determines the amplitude threshold of the ultrahigh frequency impact load and verifies the effectiveness of ultrahigh frequency impact technology for granite failure subjected to confining pressure.

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A Piezoelectric‐Driven Rock‐Drilling Device for Extraterrestrial Subsurface Exploration

Cited by 12 publications

References 23 publications

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Novel Approach for In-Situ Resource Utilization based Subtractive Manufacturing in Space

Towards Lunar In-Situ Resource Utilization Based Subtractive Manufacturing

Effect of Amplitude and Confining Pressure on Granite Failure under Ultrahigh Frequency (UHF) Impact Based on Radiation Temperature

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