The advent of additive manufacturing, particularly in the realm of metal applications, has ushered in a new era of production technology that poses exciting possibilities and critical concerns regarding sustainability. Researchers Bahuriddin, Saman, and Mohamad-Ali, along with their colleagues, have undertaken a comprehensive exploration of this vital subject, encapsulated in their recent work. With the rapid proliferation of techniques such as selective laser melting and binder jetting, the implications for manufacturing processes are profound. However, along with these advancements, there are pressing questions about the environmental and social impacts associated with metal additive manufacturing.
The integration of sustainability assessments into the additive manufacturing domain is not a straightforward endeavor. Historically, manufacturing sectors have struggled to balance economic development with ecological preservation and social equity. Additive manufacturing, by its design, holds the potential to transform these traditional paradigms through its additive nature, significantly reducing waste and allowing for the production of complex geometries that were previously unfeasible using subtractive methods. Yet, the complexities of the technological processes and the materials used still present significant challenges regarding environmental footprints.
In the review conducted by Bahuriddin et al., the researchers meticulously curated existing literature to map out the current approaches to sustainability assessment within the metal additive manufacturing landscape. They observe that while there is a robust discourse surrounding the benefits of reduced material waste and more efficient resource utilization, the broader implications—particularly regarding energy consumption during production and lifecycle impacts—remain inadequately addressed. A significant finding of their research is revealing areas where existing frameworks fall short in adequately assessing and mitigating the potential environmental detriments associated with intensified metal manufacturing.
The essential concept of the triple-bottom-line perspective provides a critical framework that drives this evaluation. It extends beyond mere economic metrics, incorporating environmental and social dimensions into the assessment process. The authors highlight that many studies tend to gravitate predominantly toward economic viability, neglecting the equally essential environmental and social factors that are imperative for holistic sustainability. Such omissions can lead to misleading conclusions regarding the sustainability of metal additive manufacturing practices and therefore, policy recommendations and corporate strategies based on these assessments may lack rigor and comprehensiveness.
Equipped with multiple case studies and empirical data, the authors of this literature review provide actionable insights into how sustainability can be integrated effectively in metal additive manufacturing practices. They call for the development of a standardized set of metrics that encapsulate the complete spectrum of impacts—energy use, emissions, toxicity, and social equity—in an effort to unify approaches across the field. To support this, the authors document various models of sustainability assessment that could be tailored specifically to the unique characteristics of additive manufacturing.
One of the more compelling arguments presented in their analysis is the potential for metal additive manufacturing to lead the way in creating circular economy principles within manufacturing industries. By enabling the recycling and reuse of materials through advanced metal processing technologies, such as re-melting of scrap metal and the use of recyclable powders, metal additive manufacturing stands at the forefront of a shift towards more sustainable production modalities. The review prompts further inquiry into these practices, urging researchers and practitioners alike to investigate the systemic benefits embedded within these new frameworks.
Moreover, the researchers shine a light on the technological barriers that impact sustainability assessments. The discrepancies in energy consumption between various additive manufacturing processes are stark, necessitating a closer examination to identify whether specific methods present an optimal pathway toward sustainability. Concurrently, the environmental impacts of materials used in additive manufacturing—whether it be metals, polymers, or composites—need to be comprehensively analyzed to ensure that innovative methods in manufacturing do not translate into hidden ecological consequences.
To address the multifaceted challenge of sustainability in metal additive manufacturing, it is paramount that interdisciplinary collaboration be fostered. This can encompass partnership between technologists, environmental scientists, and social scientists to synthesize their efforts in crafting more robust sustainability assessment frameworks. Such collaboration could facilitate the advancement of a holistic understanding—one that merges technological efficacy with ecological stewardship and social responsibility.
The implications of the findings relay a call to action for policymakers and industry leaders to prioritize sustainability in the deployment of metal additive manufacturing technologies. As these methods continue to gain traction, the elements of sustainable development must be intricately woven into their strategic frameworks to ensure that progress does not come at the expense of future generations. Moreover, the integration of sustainability metrics into regulatory frameworks may guide enterprises in making informed decisions that align with global sustainability goals.
Looking ahead, it is essential for ongoing scholarship in this field to build upon the groundwork laid by Bahuriddin et al. Their literature review positions itself as an important conduit to stimulate further research and inquiry into how metal additive manufacturing can not only align with but also potentially accelerate global sustainability efforts. The discourse created through such examinations is vital, ensuring that the innovations within additive manufacturing contribute positively to the environment, society, and the economy alike.
As society strides into an era characterized by advanced manufacturing technologies, the reflections provided by the authors underscore the quintessential necessity of considering sustainability as an integral aspect of these developments. The journey towards fully understanding and implementing sustainable practices in metal additive manufacturing is undoubtedly a continuing narrative, one that beckons collective efforts and insights from various sectors to achieve its promising potential.
In conclusion, the work undertaken by Bahuriddin, Saman, Mohamad-Ali, and their colleagues not only sheds light on the current landscape of sustainability assessments in metal additive manufacturing but also formulates a framework for navigating the challenges ahead. As the imperative of sustainability becomes more pronounced, it is through such comprehensive studies that industries can find the pathway toward more responsible and impactful manufacturing processes.
Subject of Research: Metal Additive Manufacturing Sustainability Assessments
Article Title: State of sustainability assessments of metal additive manufacturing: literature review and triple-bottom-line perspectives.
Article References:
Bahuriddin, N.S., Saman, M.Z.M., Mohamad-Ali, N. et al. State of sustainability assessments of metal additive manufacturing: literature review and triple-bottom-line perspectives.
Environ Sci Pollut Res (2025). https://doi.org/10.1007/s11356-025-36889-0
Image Credits: AI Generated
DOI:
Keywords: Sustainability, Metal Additive Manufacturing, Triple-Bottom-Line, Circular Economy, Resource Utilization
