Tag: Agriculture

Dr. Krishna Chaitanya Mallampalli: Assistant Professor at Nirma University, India

Article Details

The article titled “Ergonomic Hand Tool Design to Mitigate Upper Extremity Work-related Musculoskeletal Disorders Among Women Cashew Kernel Separating Workers: A Pilot Study” was published in 2026 in the The Institution of Engineers (India) Journal of The Institution of Engineers (India): Series C. The study was conducted by Krishna Chaitanya Mallampalli and Sougata Karmakar. The research addressed occupational health issues faced by women workers in India’s cashew processing industry, specifically focusing on musculoskeletal disorders caused by repetitive manual kernel separation activities. The researchers developed an ergonomic Cashew Kernel Separating Hand Tool (CKSHT) and evaluated its effectiveness through objective posture assessment and subjective usability analysis.

Novelty

The novelty of this study lies in its worker-centered ergonomic intervention specifically tailored for women cashew kernel separating workers, a highly underexplored occupational group in ergonomics research. Unlike conventional industrial tool redesign studies, this work incorporated a participatory design approach, where workers actively contributed to the development process of the ergonomic tool. The study uniquely combined ergonomic posture analysis with user perception and usability evaluation to create a practical, low-cost occupational health solution for small-scale agro-processing industries. The introduction of a customized ergonomic hand tool for repetitive cashew kernel separation tasks represents an innovative contribution to rural occupational ergonomics.

Impact

The study has substantial occupational health and industrial impact because it directly addresses Upper Extremity Work-related Musculoskeletal Disorders (UEMSDs), a common yet neglected issue among women workers in labor-intensive industries. By improving hand-wrist posture and reducing discomfort, the ergonomic intervention can potentially enhance worker productivity, reduce absenteeism, and improve long-term health outcomes. The research also provides a scalable model for ergonomic redesign in other manual processing sectors such as agriculture, food handling, handicrafts, and small manufacturing industries. Its findings may support policymakers and industrial managers in implementing worker-friendly technologies in informal and semi-mechanized workplaces.

Originality

The originality of the research stems from integrating ergonomic engineering principles with real-world occupational challenges in the Indian cashew industry. Most previous studies in cashew processing focused on productivity or mechanization, whereas this study concentrated specifically on biomechanical safety and worker comfort. The development of a dedicated ergonomic hand tool for kernel separation tasks, validated using both goniometric measurements and worker feedback, demonstrates a unique interdisciplinary approach combining ergonomics, industrial engineering, occupational health, and participatory design methodologies.

Experimental Rigor

The study demonstrated strong experimental rigor through systematic ergonomic evaluation methods. The researchers employed objective measurements using goniometric analysis to quantify wrist and hand postures while comparing the traditional and newly designed tools. In addition, subjective assessments involving discomfort rating, usability evaluation, and user satisfaction surveys strengthened the reliability of the findings. The use of both qualitative and quantitative ergonomic assessment techniques enhanced the scientific validity of the research. The pilot-study framework also allowed controlled comparison of tool performance under actual working conditions.

Sustainability Impact

The ergonomic intervention proposed in this study contributes significantly to social sustainability by promoting worker health, safety, and well-being in small-scale industries. The newly developed tool reduces physical strain and minimizes the risk of long-term musculoskeletal disorders, thereby supporting sustainable labor practices. Since the design emphasizes simplicity, affordability, and usability, it is suitable for economically constrained rural processing environments. The study aligns with sustainable development goals related to decent work, occupational health, gender equity, and inclusive industrial innovation by empowering women workers through safer working conditions.

Applicability

The practical applicability of the ergonomic Cashew Kernel Separating Hand Tool is one of the major strengths of the study. The tool was specifically designed for real-world implementation in India’s small-scale cashew processing units, where manual labor remains dominant. Its low-cost and user-friendly design make it suitable for widespread adoption without requiring expensive technological infrastructure. The ergonomic design framework developed in this research can also be adapted for designing safer hand tools in other repetitive manual occupations such as nut processing, agricultural harvesting, handicraft production, and food packaging industries. The findings provide valuable guidance for ergonomists, product designers, occupational safety professionals, and rural industry stakeholders.

Research Portfolio

Dr. Krishna Chaitanya Mallampalli is an Indian ergonomics and human factors researcher currently serving as an Assistant Professor at Nirma University. He completed his Ph.D. in Design from Indian Institute of Technology Guwahati with specialization in ergonomic design interventions and occupational health. His research primarily focuses on reducing work-related musculoskeletal disorders through user-centered design, workstation optimization, and ergonomic product development. He has contributed extensively to ergonomics research in cashew-processing industries and manual occupational activities, combining engineering design with human-centered approaches.

Online Profile

ORCID Profile

Education

Dr. Krishna Chaitanya Mallampalli earned his Ph.D. in Design from Indian Institute of Technology Guwahati between 2018 and 2022. He completed his M.Tech in Machine Design from Acharya Nagarjuna University during 2015–2017 and his B.Tech in Mechanical Engineering from the same university in 2011. Additionally, he obtained postgraduate diplomas in Environmental Health and Safety Management from Andhra Pradesh Productivity Council and Human Resource Management from Acharya Nagarjuna University, strengthening his multidisciplinary expertise in workplace safety and industrial management.

Research Focus

Dr. Mallampalli’s research centers on ergonomics, occupational biomechanics, human factors engineering, and user-centered product design. His studies emphasize ergonomic interventions for reducing musculoskeletal disorders among industrial workers, especially female laborers involved in repetitive manual tasks such as cashew shelling, kernel separation, handcrafted polishing, and cleaning activities. He integrates CAD-based ergonomic simulations, participatory design methods, posture assessment, and workstation redesign strategies to improve worker comfort, productivity, and occupational safety.

Experience

Dr. Mallampalli has accumulated extensive academic, research, and industrial experience over the years. He currently serves as an Assistant Professor at Nirma University since September 2025. Previously, he worked as an Ad-hoc Faculty member at National Institute of Technology Jamshedpur and as a Post-Doctoral Fellow at Indian Institute of Technology Guwahati. He also served as Assistant Professor at Vellore Institute of Technology. Before entering academia, he worked in industrial roles as Assistant Engineer in manufacturing and engineering enterprises, which provided practical insights into workplace systems and industrial ergonomics.

Research Timeline & Activities

Between 2020 and 2025, Dr. Mallampalli produced significant research contributions in ergonomics and occupational health through journal publications, conference proceedings, and patented product designs. His early research investigated musculoskeletal disorders among cashew-processing workers and ergonomic risk assessment of industrial postures. Later, his work evolved toward simulation-based ergonomic product development, workstation redesign, and CAD-assisted ergonomic evaluations using CATIA software. He actively participated in international conferences such as International Conference on Research into Design and ergonomics-focused research events, contributing chapters and presentations on user-centered design methodologies and occupational safety improvements.

Awards & Honors

Dr. Mallampalli received the Distinguished Paper Award at the International Conference on Research into Design 2021 held in Mumbai, India, recognizing the quality and innovation of his ergonomics research. In 2023, he was awarded the FPE Impact Grant by the Foundation for Professional Ergonomics for his research contributions toward occupational ergonomics and worker safety. He also secured the VIT SEED Grant for a funded project focusing on musculoskeletal ailments and ergonomic interventions in manual cashew kernel separating tasks.

Strength for the Best Innovator Award