DTU Studieprojekt - Properties and performance of bio-based composites

Danmarks Tekniske Universitet (DTU)

Ph.d. & forskning
Studieprojekt/speciale
Storkøbenhavn

Properties and performance of bio-based composites

Udbyder
Vejleder
Sted
København og omegn
Bio-based composites are gaining increasing interest from society and industry due to their combination of good technological performance and low environmental impact. Bio-based composites are currently used for secondary structural components in transportation and building applications, but their potentially high mechanical properties and low weight point to a future use also for primary structural components.

Below follows a list of research issues on bio-based composites that are addressed by the “Composites Materials and Mechanics” section at DTU Wind Energy, and that can form the topic of a student project:

The variability in mechanical properties. Compared to conventional fibres, natural fibres show typically relative larger variability in properties due to uncontrolled conditions during their growth and processing. It is believed that the variability in properties is primarily caused by the distribution of defects along the fibres.

The influence of humidity. In contrast to most conventional fibres, natural fibres absorb large amount of moisture from the surrounding atmosphere leading to changes in dimensions and mechanical properties.

The packing ability of fibres. In composites, the packing ability of the fibres determines the maximum obtainable fibre content. Natural fibres show typically lower packing ability than conventional fibres.

The fibre preforms. Natural fibres are widely available in the form of woven fabrics aimed for textile applications. Development is however needed to tailor-make natural fibre preforms for composite applications; optimization parameters are fibre twisting angle, yarn linear density, and yarn non-crimp configuration.

The use of biomass-based polymer matrices. To have fully biocomposite materials, both the fibre and the matrix phases should be derived from biomass-based resources. A range of commercially available thermoplastic and thermosetting biopolymers are currently being developed, and their technical performance must be evaluated with respect to their use in composites.

The processing of composites. Due to the many special characteristics of natural fibres and biopolymers, the conventional manufacturing techniques used for composites need to be modified.

The fibre/matrix interface in composites. Methods must be developed to characterize the interface bonding properties between natural fibres and biopolymers.

The porosity in composites. Bio-based composites contain typically a relative larger amount of porosity than conventional composites, and this must be included in the analysis of properties.

The mechanical performance of composites. Since bio-based composites are new types of materials, their complete mechanical performance (e.g. tension, compression, shear, fracture toughness, fatigue, creep) must be determined.

The modelling of composite properties. The irregular form and size of natural fibres lead to composites with a complicated microstructure, and this entails changes to the typically used micromechanical models.

Development of design models

Forudsætninger
Composites, materials science

Emneord

Kontakt
Virksomhed/organisation
DTU Vindenergi

Navn
Bo Madsen

Stilling
Lektor, Sektionsleder, Sektion for Kompositmaterialer

Mail
boma@dtu.dk

Vejleder-info
Kandidatuddannelsen i Konstruktion og Mekanik
Vejleder
Bo Madsen

Type
Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Materiale- og Procesteknologi
Vejleder
Bo Madsen

Type
Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Vindenergi
Vejleder
Bo Madsen

Type
Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus


Login for at se hele opslaget

Dette jobopslag er kun tilgængeligt for vores brugere. Log ind eller opret en profil - det er gratis og tager kun to minutter.

Log ind med sociale medier


Log ind med din karriereprofil

@


Glemt kode Ny bruger

Løbende ansøgningsfrist

Angiv venligst i din ansøgning, at du har ansøgt opslaget via Studerende Online

Ph.d. & forskning
Studieprojekt/speciale
Storkøbenhavn
Anlæg, Byggeri & Konstruktion
Kemi, Biotek & Materialer
Klima, Miljø & Energi
Maskin & Design
Matematik, Fysik & Nano
Naturvidenskab
Produktion, Logistik & Transport
Teknik & Teknologi
Forskning & Udvikling
Naturvidenskab
Teknik



Danmarks Tekniske Universitet (DTU) - hurtigt overblik


Danmarks Tekniske Universitet (DTU)
Danmarks Tekniske Universitet (DTU)
DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 11.200 studerende uddanner sig her til fremtiden, og 6.000 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

Placering
Anker Engelunds Vej 1
2800 Kgs. Lyngby
Logo: Danmarks Tekniske Universitet (DTU)
Efterspørgsel efter nye talenter

Hvilke jobtyper og arbejdsområder udbyder vi normalt og hvor mange nye talenter søger vi efter?


Nyeste tweets
Henter tweets...
Facebook feed

Henter facebook feed...

LinkedIn

Følg vores aktiviteter på LinkedIn.


Webside

Få mere info omkring vores virksomhed på vores egne websider:

www.dtu.dk


Danmarks Tekniske Universitet (DTU) i Google

Er der andre informationer om os, som du burde vide? Se, hvad en Google-søgning siger.



https://studerendeonline.dk/job/1219342/
Vi bruger cookies til statistik, sociale medier og brugeroplevelse. Ved at bruge sitet accepterer du vores privatlivspolitik. (luk)
HPT