In the context of system of systems (SoS) engineering, the incorporation of design principles is critical to guide the engineering process. This paper presents a systematic literature review to synthesize a list of principles tailored for SoS. 26 principles were identified as generic principles and 39 were mapped to the specific challenges in SoS engineering. Through an evaluation using the principle of modularisation in the design of a charging infrastructure, the study offers insights into the real-world effectiveness of these principles, showing their relevance in SoS engineering tasks.

Weak ties contribute to an individual's happiness, health and career, yet networking events supporting weak ties are often considered ineffective and unenjoyable. More support is needed to aid the design of these experiences. This inductive qualitative study explores how weak tie interactions occurred in a 3-day event for a professional networking community. Data was collected from multiple behavioural settings through direct observation, semi-structured interviews and archival data. Results highlight five structures underpinning weak tie interactions and associated implications for design.

With the dissemination of additive manufacturing (AM), numerous methods have emerged to support the design process. One possibility is to improve functional solutions through AM-conformal design. Literature-based criteria for the assessment of AM-conformity already exist. Within our study, we address the gap in criteria between a theoretical perspective and a practitioner's perspective. To this end, we first explain the application of the criteria through a use case and conduct an evaluation in an industrial environment adding practitioner's criteria to enable the assessment of AM-conformity.

Additive Manufacturing (AM) brought new design freedom and possibilities that enable design and manufacturing of products with new forms and functionalities. To utilise these possibilities a new design approach emerged, Design for Additive Manufacturing (DfAM), that contains methods and tools for supporting AM oriented design process. Designers working with AM are aware of the need to apply DfAM and AM possibilities in conceptual design phase where they have the most significant influence on product architecture and form but are facing a lack of suitable DfAM approaches for early design phases. Therefore, the presented research is investigating possibilities of storing and representing AM knowledge in the form of design principles to be used in the conceptual design phase. The paper proposes conceiving of Design Principles for Additive Manufacturing repository where formalised AM knowledge is stored in the form of design principles and structured based on function criteria. In the paper, various elements of design principle representation are discussed, as well as their role in the conceptual design process.