Issue 75

G. U. Raju et alii., Fracture and Structural Integrity, 75 (2026) 281-296; DOI: 10.3221/IGF-ESIS.75.20

Figure 15: Maximum equivalent stress in S3 tensile specimen.

Nanocomposites

Tensile strength from FE simulation in MPa

Tensile strength from experimental results in MPa

Variation in results ( %)

120.16 157.74

126.27 146.39

4.84 7.57

1 wt. % nanoclay 1.5 wt. % nanoclay

Table 3: Simulation results of samples.

Weight fraction of reinforcement

Hardness improvement 17% – 38%

Tensile strength improvement

Wear rate reduction

Wear test load range 10 – 30 N

Authors Present study Patil et al. [13] Patil et al. [15] Patel et al. [5] Patel et al. [4,6] Dhongde et al. [11] Singh et al. [9] Patel et al. [10]

Composite system

AA7076/perlite nanoclay

1 % –1.5%

19% – 38%

13% – 39%

AA 7076/MWCNTs AA 7076/ Graphene Amine-Carbon fiber

0.50 % – 1.50% 0.50 % – 1.50%

–

–

4 % – 35%

10 – 30 N

(-10%) – – 39%

–

–

10 – 30 N

–

AA5052/B 4 C

5 %

70%

–

–

AA5052/SiC

5 %

40%

–

10% – 47%

5 – 15 N

AA7075/ ZrO 2 / 5 % TiB 2 (fixed) Al − Si (LM30)/SiC

2 – 6% ZrO 2

80 – 85%

5%

–

–

10 %

17%

38%

–

–

AA5052/B 4 C

5 %

–

–

76% – 84%

5 – 15 N

53% 113% 39% 101%

8% B 4 C + 2% CNTs 12% B 4 C + 2% CNTs 8% SiC + 2% CNTs 12% SiC + 2% CNTs

Nirala et al. [16]

Aluminum/ B 4 C/SiC/CNTs

–

–

–

Table 4: Comparative analysis of mechanical and tribological properties of AA7076/perlite nanoclay with other aluminium matrix.

C OMPARATIVE ANALYSIS OF MECHANICAL AND TRIBOLOGICAL PROPERTIES For instance, the maximum improvement in tensile strength (38%) and hardness (38%) for AA7076/perlite nanoclay composite is comparable to the 38% increase in tensile strength reported by Singh et al. [9] using 10 wt.% SiC and the 40% A critical observation from the comparison of the mechanical and tribological properties of aluminium matrix nanocomposites from the literature with the current work, as presented in Tab. 4, reveals a significant enhancement achieved with a remarkably low weight fraction (1–1.5 wt.%) of perlite nanoclay reinforcement. While many high performance composites, such as those reinforced with SiC, B 4 C, or hybrid systems, require reinforcement loads of 5 wt.% or higher to achieve substantial improvements [5,9,10,16], the present composite demonstrates comparable or higher effectiveness at a fraction of the reinforcement content.

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