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Related Concept Videos

Wood Products01:21

Wood Products

Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...

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Ultra-Low Intensity Continuous Wave Laser Ablation Propulsion With Graphene-Engineered Wood.

Afnan S M Elmubasher1,2, Rami Elkaffas1, Mohamed Hamid Salim3,4

  • 1Department of Aerospace Engineering, Khalifa University, Abu Dhabi, UAE.

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Summary
This summary is machine-generated.

This study introduces sustainable graphene-delignified wood composites as advanced propellants for laser ablation propulsion. These novel materials demonstrate superior specific impulse and strength, outperforming conventional options for space applications.

Keywords:
delignificationgraphenelaser ablation propulsionwood

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Area of Science:

  • Materials Science
  • Aerospace Engineering
  • Sustainable Propulsion

Background:

  • Conventional propellants for laser ablation propulsion face challenges in achieving high specific impulse with low-intensity continuous wave laser irradiation.
  • Existing materials like polymers and metals have limitations in performance and sustainability for advanced propulsion systems.

Purpose of the Study:

  • To investigate low-density graphene-delignified wood composites as novel, sustainable propellants for continuous-wave laser ablation propulsion.
  • To evaluate the performance metrics, including specific impulse and ablation threshold, of these novel wood-based propellants.

Main Methods:

  • Experimental analysis of natural wood (NW) and graphene-delignified wood (GDW) composites under continuous-wave laser irradiation.
  • Measurement of density-specific specific impulse, absolute specific impulse, ablation threshold intensity, and tensile strength.
  • Comparative performance analysis against conventional propellant materials.

Main Results:

  • Natural wood achieved a density-specific specific impulse of 5043.0 ± 188 s g⁻¹ cm³, exceeding conventional propellants.
  • Graphene-delignified wood exhibited an ultra-low ablation threshold intensity of 0.54 MW m⁻², a 98.61% improvement in laser energy absorption.
  • GDW achieved a density-specific specific impulse of 1569.60 ± 57.40 s g⁻¹ cm³ and an absolute specific impulse of 800.49 s, significantly higher than existing materials.
  • GDW demonstrated a tensile strength of 273.1 MPa and a specific tensile strength of 533 MPa g⁻¹ cm³, surpassing common aerospace structural materials.

Conclusions:

  • Low-density graphene-delignified wood composites show significant potential as sustainable and high-performance propellants for laser ablation propulsion.
  • These materials offer superior specific impulse and mechanical strength, making them suitable for light and space applications.
  • The findings pave the way for eco-friendly alternatives in advanced aerospace propulsion systems.