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Johan Sjöström

Tel

+46 72 565 58 55

Email

johan.sjostrom@ri.se

ORCID

0000-0001-8670-062X

Johan (PhD physics, 2010) is a senior research scientist at RISE since 2011. His research is focused on wildfires, their ignition, behaviour and consequences to society. Other research areas includes experimental techniques in heat transfer from flames, fires impact on timber structures and on thermal properties of materials at high temperatures. New publications: ● New grassfire danger warning model for Sweden, https://rib.msb.se/filer/pdf/29530.pdf ● Overview of wildfires in Sweden, https://rib.msb.se/filer/pdf/29089.pdf ● Garden structure is critical for building survival in Swedish wildfires, https://www.sciencedirect.com/science/article/pii/S0925753522002673

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Publications

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NoMR! - Improved Wildfire Preparedness through Cross-Sectoral Dialogue

The project aims to form a holistic description of vulnerability that is quantifiable and transferable from spatial and temporal variables. Using this as a basis, the distribution of responsibility and roles of actors can be descr…

Climate Change Resilience in Small Communities in the Nordic Countries

How can capacity building in small rural communities be increased to meet the effects of climate change, involving the competencies and resources among the citizens and by new ways of organising support and assistance from authori…

Fire Safe Implementation of Mass Timber In Tall Buildings

Research of the fire performance of CLT and Glued Laminated Timber buildings, with visible wood surfaces.

European approach to assess the fire performance of facades

The project is formed in accordance with the Invitation to Tender for “Finalisation of the European approach to assess the fire performance of facades” (Call for tenders No 761/PP/GRO/IMA/19/1133/11140) of the European commission …

Up-scaling of lightweight multi-functional concrete and ceramic materials

Development, characterization and upscaling of lightweight materials and components. Introducing new functionalities like self-sensing, easy-to-clean, photocatalytic materials due to the addition of the nanoparticles. Accelerating…

How to make critical infrastructure resilient

The corona epidemic has subjected areas of our critical infrastructure to severe strain, raising the issue of how we should be designing infrastructure to withstand the unexpected and, indeed, if this is even possible. We invited …

Thermal Conductivity Measurement Using Slug Calorimeter

Do you want to characterize a material regarding its thermal conductivity or thermal transport parameters at high temperatures? We can measure effective thermal conductivity up to 1 100 °C

Thermal Conductivity Measurement using THW-method

Different fluids and pastes have different thermal conductivities at different temperatures. We perform thermal conductivity measurement on different fluids as well as oils, coolants, colloidal suspensions, aerogels, etc

Thermogravimetric Analysis and Differential Scanning Calorimetry

By simultaneous assessment of calorimetric (energy flows) and gravimetric (mass changes) measurements we can characterize the response of a material when heated or exposed to different gases.  With our 'Simultaneous Thermal A…

Thermal expansion

To ensure that a choice of material is correct throughout the temperature range of the product, it can be important to know the thermal expansion. With our equipment we can measure the thermal expansion and calculate the coefficie…

Thermal Conductivity Measurements TPS method

We measure thermal conductivity (i.e. heat conduction) using the Transient Plane Source (TPS) method according to ISO 22997-2 for which we are an accredited laboratory. The TPS method can be used to measure the thermal conductivit…

Thermal Properties

Do you want to characterize your material regarding its thermal conductivity, insulation capacity, latent heats of reactions or its stability at high temperatures?

Wildfires

In Sweden the rescue services responds toon average 5000 annual incidents of wildfires. Most of these are small and during the last 200 years the annual burnt area have decreased by about 99 %. However, societal and climatic trend…

Fire and rescue service

RISE has a long tradition of cooperating with fire and rescue services in different research projects. RISE intends to be the one links rescue services, researchers and companies who provide new technology as well as being the obv…

Fire Safety of timber buildings

RISE is a global leader of research of fire safety of timber buildings, developing fire resistance calculation methods and performance based design methods.

Multiphysics

Many problems in modern science or engineering are of multiphysics character. This means that they are governed by more than one type of physics, each normally represented by a set of partial differential equations. At RISE we can…

Publications

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