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    <title language="eng">Laser Melting vs. Laser Sintering: Large Area Heat Processing of Lunar South Pole Simulant</title>
    <abstract language="eng">A key component of future lunar missions is the concept of In-Situ Resource Utilization (ISRU), which involves the use of local resources to support human missions and reduce dependence on Earth-based supplies. This paper investigates the thermal processing capability of lunar regolith without the addition of binders, with a focus on large-scale applications for the construction of lunar habitats and infrastructure. The study used a simulant of lunar regolith found on the Schrödinger Basin in the South Pole region. This regolith simulant consists of 20 wt% basalt and 80 wt% anorthosite. Experiments were conducted using a high power CO2 laser to sinter and melt the regolith in a 80 mm diameter laser spot to evaluate the effectiveness of direct large area thermal processing. Results indicated that sintering begins at approximately 1,180 °C and reaches full melt at temperatures above 1,360 °C. Sintering experiments with this material revealed the formation of dense samples up to 11 mm thick, while melting experiments successfully produced larger samples by overlapping molten layers and additive manufacturing up to 50 mm thick. The energy efficiency of the sintering and melting processes was compared. The melting process was about 10 times more energy efficient than sintering in terms of material consolidation, demonstrating the promising potential of laser melting technologies of anorthosite-rich regolith for the production of structural elements.</abstract>
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    <author>Juan-Carlos Ginés-Palomares</author>
    <author>Julian Baasch</author>
    <author>Simon Stapperfend</author>
    <author>Leonardo Facchini</author>
    <author>Stefan Linke</author>
    <author>Enrico Stoll</author>
    <author>Jens Günster</author>
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      <type>uncontrolled</type>
      <value>Additive Manufacturing</value>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser melting</value>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ISRU</value>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Moon</value>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>Regolith</value>
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    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
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    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
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