Study
Final ProductionHigh ImpactStrong effect

Honeycomb structures reduce blunt trauma by 40.8% in composite body armor

Incorporating aluminum honeycomb structures within hybrid composite armor significantly reduces behind-armor blunt trauma by absorbing impact energy more effectively.

SHAREOK (University of Oklahoma) · 2015

01

Key Findings

  • 01The hybrid composite armor with a honeycomb core met the NIJ 0101.06 Level III standard.
  • 02A maximum reduction in Back Face Signature (BFS) of 40.8% was observed compared to a baseline armor of the same weight.
  • 03Analytical schemes showed good agreement with experimental results, correlating honeycomb attributes with performance.
  • 04Limitations to the use of honeycombs in armor were identified.
02

Application

Design takeaway

Integrate optimized honeycomb core structures into composite armor designs to enhance impact energy absorption and reduce behind-armor blunt trauma, thereby improving wearer safety.

How to apply

When designing protective structures subjected to dynamic impacts, consider incorporating cellular or lattice structures to manage energy absorption and minimize transmitted forces.

Project actions

  • 01Investigate different cellular structures (e.g., hexagonal, triangular) and their impact absorption properties.
  • 02Consider the material properties of the honeycomb and the surrounding composite layers for optimal performance.
03

Method & Evidence

AimCan the integration of honeycomb structures into hybrid composite armor improve ballistic performance and reduce behind-armor blunt trauma compared to conventional designs?
MethodExperimental testing and analytical modelling
ProcedureA hybrid composite armor with an aluminum honeycomb core was designed and fabricated. Ballistic testing was conducted according to the NIJ 0101.06 Level III standard. Back Face Signature (BFS) and V50 metrics were measured. Analytical models were developed to correlate honeycomb attributes with ballistic performance, and Finite Element Analysis (FEA) was used to supplement experimental findings.
ContextBody armor design and ballistic impact testing

Variables

IVPresence and attributes of honeycomb structure (e.g., material, cell size, density)
DVBallistic performance metrics (e.g., Back Face Signature, V50), Behind Armor Blunt Trauma (BABT)
CVArmor weight, composite material layers, projectile type, impact velocity, testing standard
04

Strengths & Limitations

Strengths

  • +Direct experimental validation of performance improvement.
  • +Correlation of analytical models with experimental results.
  • +Compliance with a recognized industry standard.

Limitations

The effectiveness of honeycombs might vary depending on the specific type of projectile, impact velocity, and the overall armor system design. Manufacturing consistency of honeycomb structures can also be a challenge.

Reliability & validity

The study's validity is supported by experimental testing against a recognized standard and the use of analytical and FEA models for corroboration. Reliability would depend on the consistency of manufacturing and testing procedures.

Think critically

How might the manufacturing process of honeycomb structures influence their performance in real-world applications, and what are the trade-offs between performance gains and production complexity?

05

Design Principles

"Cellular structures, such as honeycombs, can be strategically employed in composite materials to manage and dissipate impact energy, leading to improved protective performance."

This research offers a tangible method for enhancing the protective capabilities of body armor. By understanding how honeycomb geometry influences impact absorption, designers can create lighter, more effective protective gear that minimizes injury to the wearer.

06

What This Means for Your Design

Adding a honeycomb layer to body armor acts like a crumple zone, absorbing more of the impact energy from a bullet and reducing the force felt by the person wearing it, leading to less injury.

How to use in your project

  • 1.Reference this study when exploring material choices for impact resistance or when analyzing the performance of protective equipment in your design project.
07

Add to My Project

08

Quick Cite

(2015). Honeycomb in Hybrid Composite Armor Resisting Dynamic Impact. SHAREOK (University of Oklahoma). Retrieved from https://designdex.org/study/83cd3b71-fd24-4d3e-bc5b-7526eb143eca/honeycomb-structures-reduce-blunt-trauma-by-40-8-in-composite-body-armor

Paragraph starter

The integration of honeycomb structures within composite materials, as demonstrated by Bhat (2015) in hybrid composite armor, offers a significant improvement in impact energy absorption. This approach led to a notable reduction in behind-armor blunt trauma by effectively managing the deformation caused by projectile impact, suggesting that cellular structures can be a key design element for enhancing protective performance.

09

Source

SHAREOK (University of Oklahoma)

Honeycomb in Hybrid Composite Armor Resisting Dynamic Impact

journal · 2015

View source

Questions about this research

What does the research say about honeycomb structures reduce blunt trauma by 40.8% in composite body armor?
Integrate optimized honeycomb core structures into composite armor designs to enhance impact energy absorption and reduce behind-armor blunt trauma, thereby improving wearer safety. Evidence: SHAREOK (University of Oklahoma) (2015).
Why does "Honeycomb structures reduce blunt trauma by 40.8% in composite body armor" matter for design?
This research offers a tangible method for enhancing the protective capabilities of body armor. By understanding how honeycomb geometry influences impact absorption, designers can create lighter, more effective protective gear that minimizes injury to the wearer.
How can designers apply this research?
Integrate optimized honeycomb core structures into composite armor designs to enhance impact energy absorption and reduce behind-armor blunt trauma, thereby improving wearer safety.
What were the main findings?
The hybrid composite armor with a honeycomb core met the NIJ 0101.06 Level III standard.. A maximum reduction in Back Face Signature (BFS) of 40.8% was observed compared to a baseline armor of the same weight.. Analytical schemes showed good agreement with experimental results, correlating honeycomb attributes with performance.. Limitations to the use of honeycombs in armor were identified.
What research method was used?
Experimental testing and analytical modelling.
How strong is the evidence?
Evidence strength is rated Strong effect, based on a 2015 journal from SHAREOK (University of Oklahoma).
What should I do differently in my next project?
When designing protective structures subjected to dynamic impacts, consider incorporating cellular or lattice structures to manage energy absorption and minimize transmitted forces.
What are the limitations?
The study identified limitations to the use of honeycombs, which may include susceptibility to certain types of impact, environmental degradation, or manufacturing complexities.
Is there evidence that armor affects design outcomes?
The new armor design successfully passed ballistic tests and demonstrated a significant reduction in the deformation on the back of the armor, which directly correlates to a reduction in blunt trauma, while maintaining a comparable weight to existing armor. This research offers a tangible method for enhancing the prote Source: SHAREOK (University of Oklahoma) (2015).
Where does this blunt trauma research apply?
Body armor design and ballistic impact testing It sits within final production research on designdex.org.

Related research topics

armor design research · evidence on armor · does armor improve design outcomes · blunt trauma studies for designers · armor and blunt trauma findings · final production research evidence