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Zorluk: OrtaDrawing Logical Conclusions

Modern commercial aircraft wings incorporate lightweight carbon-fiber composite materials, which have significantly lower electrical conductivity than traditional aluminum alloys. During an atmospheric lightning attachment, high electrical resistance in unprotected composite panels causes intense localized resistive heating, vaporizing internal resin and producing rapid explosive structural delamination. To mitigate this catastrophic risk, manufacturers embed an ultra-thin conductive copper mesh directly into the outer surface plies of the composite skin. This outer metallic layer disperses the electrical strike across a broad surface area before the charge can penetrate the structural laminate.

Based on the passage, which of the following can be logically concluded about unprotected composite panels during a lightning strike?

  1. A
    Their vulnerability to lightning attachments requires commercial aircraft to completely avoid high-altitude storm systems.
  2. Their high electrical resistance prevents rapid charge dispersion, causing damaging heat to concentrate within the laminate.Cevap
  3. C
    Their carbon-fiber composition makes them lighter and more electrically conductive than traditional aluminum alloys.
  4. D
    Their lower electrical conductivity allows electrical current to dissipate harmlessly into the aircraft's interior components.

Cevap

Their high electrical resistance prevents rapid charge dispersion, causing damaging heat to concentrate within the laminate.
The passage explicitly states that unprotected carbon-fiber composites possess high electrical resistance, which generates intense localized heating and vaporizes resin. It further explains that the solution is a surface copper mesh that disperses charge across a broad area before it penetrates the laminate. Therefore, it is logically deduced that unprotected panels fail because they cannot disperse the charge broadly, concentrating destructive heat within the material.

Adım Adım Çözüm

1
Identify the primary premises regarding unprotected composite panels.
The text states that composites have low electrical conductivity (high electrical resistance), which causes intense localized resistive heating and resin vaporization during a lightning strike.
Understanding the physical interaction between the electrical current and the unprotected material establishes the factual baseline.
2
Synthesize the problem with the stated function of the protective copper mesh.
The copper mesh prevents failure by dispersing current across a wide area so it does not penetrate into the structural laminate.
Comparing the protected solution to the unprotected state reveals why failure occurs in unprotected panels.
3
Deduce the logical conclusion regarding the unprotected panels.
Without the conductive mesh to disperse the charge, high resistance traps and concentrates electrical energy as destructive internal heat.
This conclusion logically bridges the cause (high resistance/lack of dispersion) to the effect (destructive localized heating).

Anahtar Kavram

Drawing logical conclusions by synthesizing cause-and-effect relationships from technical descriptions
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Drawing Logical Conclusions

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