GATE_AE_2027_MOCK_04_Q06
GATE 2027 Aerospace Engineering All-India Master Mock 04 (Aerospace Structures, Thin-Walled Beams & Aeroelasticity)
MCQ · 2 Marks
General Aptitude • Verbal Aptitude • Reading Comprehension & Critical Reasoning
Read the statement: "In composite materials, unidirectional plies provide high axial stiffness, but multi-directional layups ([0/±45/90]s) are mandatory in aircraft wing skins to avoid catastrophic delamination under combined shear and transverse loads." Which of the following is most strongly supported by the passage?
(A) Unidirectional laminates alone are insufficient for multi-axial flight loading environments.
(B) 90-degree plies are completely useless in aircraft structures.
(C) Quasi-isotropic composites are weaker than pure unreinforced epoxy resin.
(D) Delamination never occurs in multi-directional layups.
Answer Key:
A
Step-by-Step Verified Solution
### Solution: The passage emphasizes that multi-directional layups are required because unidirectional plies cannot handle combined shear and transverse loads alone. Correct: A.