Abstract Scope |
Titanium alloys find diverse aerospace applications owing to their superior combination of corrosion resistance, lightweight, mechanical properties, and so forth. We analyzed the available data, in the literature, of the titanium alloys for two critical applications: aeroengines and landing gear beams. We applied fundamental statistical analysis (FSA), principal component analysis (PCA), and multiple-attribute decision making (MADM) to unearth the voice of the data. The ranks assigned by several MADMs, including ROVM (range of value method), ARAS (additive ratio assessment method)), and MEW (multiplicative exponent weighing), were consistent. FSA and PCA consolidated the MADM ranks of the alloys and identified similar top-ranked alloys. The investigations highlight similarities (and differences) across several grades/variants of the alloys, suggest potential replacement or substitute for the existing alloys, weed out some of the heavier alloys and consequently help in reducing the weight, and provide possible directions for improvement and/or development of these alloys. |