Short answer

When designing for applications where noise and vibration reduction are key, and a slight compromise in ultimate strength is acceptable, consider using hybrid composites made from reclaimed carbon and flax fibres.

Field: Final Production
Source: Recycling (2018)
Method: Experimental investigation and material characterization.
Evidence: Moderate effect

Utilizing reclaimed carbon and flax fibres in hybrid composites manufactured via the HiPerDiF method can provide a cost-effective solution for applications prioritizing noise, vibration, and harshness (NVH) reduction over peak mechanical performance. This final production research insight is drawn from a 2018 study published in Recycling. Using Experimental investigation and material characterization., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing for applications where noise and vibration reduction are key, and a slight compromise in ultimate strength is acceptable, consider using hybrid composites made from reclaimed carbon and flax fibres.

Study

Final ProductionHigh ImpactModerate effect

Hybrid Composites with Reclaimed Carbon and Flax Fibres Offer NVH Mitigation at Reduced Cost

Recycling · 2018

Key Findings

01The HiPerDiF method is suitable for manufacturing aligned discontinuous fibre intermingled hybrid composites with flax and rCF.
02Flax fibres, despite their hydrophilic nature, are unaffected by the water-based HiPerDiF process.
03Hybrid flax/rCF composites demonstrate a reduction in primary mechanical properties (stiffness, strength) but offer enhanced secondary properties like NVH mitigation.
04These hybrid composites present a viable option where a trade-off between primary mechanical performance and NVH enhancement/cost reduction is acceptable.

Application

Design takeaway

How to apply

Evaluate the trade-off between primary mechanical properties (strength, stiffness) and secondary performance (NVH) for your design. If NVH is a priority and cost is a factor, explore hybrid composite materials incorporating recycled carbon fibres and natural fibres like flax.

Project actions

01When researching materials, look for studies that combine recycled or natural fibres with traditional ones.
02Consider how secondary performance characteristics, like vibration damping, can be a key selling point for a product.

Method & Evidence

AimTo investigate the feasibility of manufacturing intermingled hybrid composites using reclaimed carbon fibres (rCF) and flax fibres via the HiPerDiF method and to assess their mechanical and vibrational properties.

MethodExperimental investigation and material characterization.

ProcedureHybrid composites were manufactured using the HiPerDiF method with a blend of flax and reclaimed carbon fibres. The resulting materials were then subjected to tensile testing to determine stiffness and strength, and vibrational analysis to assess their response to noise and vibration.

ContextMaterials science and composite manufacturing, specifically focusing on sustainable and hybrid material development.

Variables

IV["Fibre type (flax, reclaimed carbon, hybrid)","Fibre ratio in hybrid composites"]

DV["Tensile strength","Stiffness","Vibrational response (e.g., damping ratio, natural frequency)"]

CV["Manufacturing method (HiPerDiF)","Fibre length (discontinuous)","Fibre alignment (highly aligned)"]

Strengths & Limitations

Strengths

+Investigates the use of reclaimed materials for sustainability.
+Examines both mechanical and vibrational properties, offering a holistic view of performance.

Limitations

The availability and consistency of reclaimed carbon fibres can be a challenge. The specific water-based manufacturing process might not be suitable for all applications or fibre types.

Reliability & validity

The validity of the findings relies on rigorous material characterization and controlled experimental conditions. Reliability would be enhanced by repeating tests on multiple samples and ensuring consistent material sourcing and processing.

Think critically

To what extent does the reduction in primary mechanical properties limit the applicability of these hybrid composites in safety-critical structural components?

Design Principles

"Prioritize secondary performance characteristics (e.g., NVH) and cost-effectiveness by strategically incorporating recycled and natural fibres into composite structures."

This research highlights a pathway for sustainable material development in the composites industry. By incorporating reclaimed materials and natural fibres, designers can achieve specific performance targets, such as improved NVH characteristics, while also addressing cost and environmental concerns.

What This Means for Your Design

You can make materials that are good at stopping noise and vibrations, and are cheaper, by mixing recycled carbon fibres with natural fibres like flax. They won't be as strong as some other materials, but for certain uses, this is a good trade-off.

How to use in your project

1.Reference this study when exploring material choices for a design project that aims to reduce environmental impact or improve user comfort through vibration dampening.

Add to My Project

Quick Cite

Paragraph starter

Research into hybrid composites utilizing reclaimed carbon and flax fibres, such as that by Longana et al. (2018), demonstrates that materials can be engineered to prioritize noise, vibration, and harshness (NVH) mitigation and cost reduction over peak mechanical strength. This approach offers a sustainable pathway for material selection in design projects where these secondary performance characteristics are critical.

Source

Recycling

Reclaimed Carbon and Flax Fibre Composites: Manufacturing and Mechanical Properties

journal · 2018

View source

Questions About This Research

What does the research say about hybrid composites with reclaimed carbon and flax fibres offer nvh mitigation at reduced cost?: When designing for applications where noise and vibration reduction are key, and a slight compromise in ultimate strength is acceptable, consider using hybrid composites made from reclaimed carbon and flax fibres. Evidence: Recycling (2018).
Why does "Hybrid Composites with Reclaimed Carbon and Flax Fibres Offer NVH Mitigation at Reduced Cost" matter for design?: This research highlights a pathway for sustainable material development in the composites industry. By incorporating reclaimed materials and natural fibres, designers can achieve specific performance targets, such as improved NVH characteristics, while also addressing cost and environmental concerns.
How can designers apply this research?: When designing for applications where noise and vibration reduction are key, and a slight compromise in ultimate strength is acceptable, consider using hybrid composites made from reclaimed carbon and flax fibres.
What were the main findings?: The HiPerDiF method is suitable for manufacturing aligned discontinuous fibre intermingled hybrid composites with flax and rCF.. Flax fibres, despite their hydrophilic nature, are unaffected by the water-based HiPerDiF process.. Hybrid flax/rCF composites demonstrate a reduction in primary mechanical properties (stiffness, strength) but offer enhanced secondary properties like NVH mitigation.. These hybrid composites present a viable option where a trade-off between primary mechanical performance and NVH enhancement/cost reduction is acceptable.
What research method was used?: Experimental investigation and material characterization..
How strong is the evidence?: Evidence strength is rated Moderate effect, based on a 2018 journal from Recycling.
What should I do differently in my next project?: Evaluate the trade-off between primary mechanical properties (strength, stiffness) and secondary performance (NVH) for your design. If NVH is a priority and cost is a factor, explore hybrid composite materials incorporating recycled carbon fibres and natural fibres like flax.
What are the limitations?: The study focuses on specific fibre combinations and manufacturing methods; performance may vary with different fibre ratios, processing parameters, or alternative manufacturing techniques. The reduction in primary mechanical properties needs careful consideration for structural integrity.