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Engineering Science in
Additive Manufacturing Experimental statistics in AM

Figure 2. Flow diagram of the process of conducting a literature review on statistical and experimental practices within AM. Image created by the authors.
Abbreviations: AM: Additive manufacturing; DOE: Design of experiments; PBF: Powder bed fusion; SLM: Selective laser melting; SLS: Selective laser
sintering.

Figure 3. LOESS regression of the proportion of papers that use a DOE practice (color) for additive manufacturing overall (first panel) and PBF-LB/M
specifically (second panel). Image created by the authors.
Abbreviations: ANOVA: Analysis of variance; DOE: Design of experiments; PBF-LB/M: Laser-based powder bed fusion of metals.

Figure 4. LOESS regression of the proportion of papers that use a statistical analysis (color) for additive manufacturing overall (first panel) and PBF-LB/M
specifically (second panel). Image created by the authors.
Abbreviations: ANOVA: Analysis of variance; DOE: Design of experiments; PBF-LB/M: Laser-based powder bed fusion of metals.

for both the proportion of analyses used (Figure 6C) as has been corrected for unequal sample sizes.
well as the types of designs used (Figure 6D). This p-value
was calculated from a Chi-square test on deviance, and it 3.3. Cluster analysis

Volume 1 Issue 4 (2025) 6 doi: 10.36922/ESAM025340021