Short answer

When designing for energy harvesting from vibrating surfaces, consider using tuned dynamic vibration absorbers with piezoelectric elements to significantly boost energy output.

Field: Resource Management
Source: Preprints.org (2023)
Method: Mathematical modelling, simulation (modal expansion approach), and experimental testing.
Evidence: Strong effect

Integrating piezoelectric dynamic vibration absorbers tuned to a plate's natural frequencies significantly amplifies harvested energy compared to direct piezoelectric bonding. This resource management research insight is drawn from a 2023 study published in Preprints.org. Using Mathematical modelling, simulation (modal expansion approach), and experimental testing., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing for energy harvesting from vibrating surfaces, consider using tuned dynamic vibration absorbers with piezoelectric elements to significantly boost energy output.

Study

Resource ManagementRecentStrong effect

Piezoelectric Vibration Absorbers Boost Energy Harvesting Efficiency by 10x

Integrating piezoelectric dynamic vibration absorbers tuned to a plate's natural frequencies significantly amplifies harvested energy compared to direct piezoelectric bonding.

Preprints.org · 2023

Key Findings

01Tuned cantilever piezoelectric dynamic vibration absorbers generate open-circuit voltages an order of magnitude higher than directly bonded piezoelectric layers.
02Harvester tuning to the plate's first mode of vibration is crucial for maximizing energy generation.
03Harvester location on the plate also influences the generated voltage.

Application

Design takeaway

When designing for energy harvesting from vibrating surfaces, consider using tuned dynamic vibration absorbers with piezoelectric elements to significantly boost energy output.

How to apply

When designing for self-powered sensors or devices that will be mounted on vibrating surfaces (e.g., machinery, bridges, vehicles), incorporate a tuned piezoelectric vibration absorber.

Project actions

01Consider how to accurately model the resonant frequencies of your target structure.
02Investigate different methods for tuning the vibration absorber to match these frequencies.

Method & Evidence

AimTo investigate the effectiveness of tuned cantilever piezoelectric dynamic vibration absorbers for enhancing energy harvesting from plate vibrations.

MethodMathematical modelling, simulation (modal expansion approach), and experimental testing.

ProcedureA mathematical model of a plate coupled with a piezoelectric cantilever dynamic vibration absorber was developed. Simulations were performed to analyze the impact of harvester tuning and location. Experimental tests were conducted using impulsive and distributed pressure loads to validate simulation results and compare performance against direct piezoelectric bonding.

ContextStructural engineering, acoustics, and materials science applications involving ambient vibrations.

Variables

IVPresence and tuning of the piezoelectric dynamic vibration absorber.

DVGenerated open-circuit voltage (or harvested power).

CVPlate material and dimensions, excitation load type and magnitude, piezoelectric material properties, tip mass.

Strengths & Limitations

Strengths

+Combines theoretical modeling with experimental validation.
+Provides a clear quantitative comparison of different harvesting methods.

Limitations

The complexity of accurately tuning the absorber in a real-world scenario and the potential for vibration frequencies to change over time.

Reliability & validity

The study's validity is supported by both simulation and experimental testing. Reliability would depend on the consistency of the experimental setup and measurements.

Think critically

How might the effectiveness of this approach be impacted by the variability and unpredictability of real-world vibration sources?

Design Principles

"Maximize energy harvesting by resonating the energy harvester with the dominant vibration modes of the source structure."

This research offers a pathway to more efficient energy harvesting from ambient vibrations, a critical aspect of powering low-energy devices and sensors in a sustainable manner. By optimizing the harvester's design and placement, designers can unlock greater energy potential from existing structures.

What This Means for Your Design

Using a special 'tuned' absorber with a piezoelectric material can get 10 times more energy from vibrations than just sticking the material on.

How to use in your project

1.Reference this study when discussing methods for improving the efficiency of energy harvesting in your design project.

Add to My Project

Quick Cite

Paragraph starter

Research by Tonan et al. (2023) demonstrates that integrating tuned cantilever piezoelectric dynamic vibration absorbers can increase energy harvesting efficiency by an order of magnitude compared to direct piezoelectric bonding. This highlights the potential for resonance-based harvesting strategies to significantly enhance power generation from ambient vibrations.

Source

Preprints.org

Vibration Energy Harvesting from Plates by Means of Piezoelectric Dynamic Vibration Absorbers

journal · 2023

View source

Questions About This Research

What does the research say about piezoelectric vibration absorbers boost energy harvesting efficiency by 10x?: When designing for energy harvesting from vibrating surfaces, consider using tuned dynamic vibration absorbers with piezoelectric elements to significantly boost energy output. Evidence: Preprints.org (2023).
Why does "Piezoelectric Vibration Absorbers Boost Energy Harvesting Efficiency by 10x" matter for design?: This research offers a pathway to more efficient energy harvesting from ambient vibrations, a critical aspect of powering low-energy devices and sensors in a sustainable manner. By optimizing the harvester's design and placement, designers can unlock greater energy potential from existing structures.
How can designers apply this research?: When designing for energy harvesting from vibrating surfaces, consider using tuned dynamic vibration absorbers with piezoelectric elements to significantly boost energy output.
What were the main findings?: Tuned cantilever piezoelectric dynamic vibration absorbers generate open-circuit voltages an order of magnitude higher than directly bonded piezoelectric layers.. Harvester tuning to the plate's first mode of vibration is crucial for maximizing energy generation.. Harvester location on the plate also influences the generated voltage.
What research method was used?: Mathematical modelling, simulation (modal expansion approach), and experimental testing..
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2023 journal from Preprints.org.
What should I do differently in my next project?: When designing for self-powered sensors or devices that will be mounted on vibrating surfaces (e.g., machinery, bridges, vehicles), incorporate a tuned piezoelectric vibration absorber.
What are the limitations?: The study focused on the first mode of vibration; performance at higher modes was not extensively explored. The specific materials and dimensions of the plate and absorber may influence generalizability.