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Breaking the wall of Value of Monitoring Information

On August 14,2018, the Morandi bridge in Genoa Italy collapsed, which caused 43 people to die and great losses. Here I am not going to talk about why it collapsed. But I want to say what we can do to prevent this kind of tragedy from happening. Any structures are like us, if we are sick, we go to doctors. But if structures are sick, how could we know?

Yes, through structural health monitoring-SHM! SHMis process of implementing damage detection strategy, which is like a doctor giving us indication of the structure health status. However, the SHM is not like our health insurance which can be free. Some structure owners may be hesitated on investing large money before they see the VALUE.

Although it is proved that SHM is beneficial, the existing literature doesn’t tell them: when to do the monitoring? How often to do that? Which SHM techniques to choose? After monitoring, what action to take? There are so many decisions needed to be made, that’s why here comes my research, which can help t…
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Trip to UK combined with work and leisure

This July, I attended my first international conference during my PhD in Manchester, UK, which is The European Workshop on Structural Health Monitoring Series (EWSHM) 2018. Here I presented my paper : Long L., Thöns S., Döhler M. The effects of SHM system parameters on the value of damage detection informationEWSHM 2018, The 9th European Workshop on Structural Health Monitoring Series, Manchester, UK, 10-13 July 2018 Before the conference, I also attended a 3-day EWSHM workshop "Structural Health Mornitoring Using Statistical Pattern Recognition "by Los Alamos Dynamics,LLC in University of Manchester. Thanks Mr. Charles R. Farrar, Michael Todd and Eric Flynn for opening the door of  Structural health monitoring to me.  My presentation was on the second day of the conference under the special session of :Case studies and theoretical developments in quantifying the value of SHM.
On the third day, a tour of Manchester United football stadium and museum at Old Trafford followed…

Need to make decison towards your relationship? How about a decison tree analysis ?

Supposed you are in a long-distance relationship for some years, of course you want to be with your partner in a same city, but both of you have job in different cities, your partner shows reluctance to move to your city. What will you do? Sacrifice your job to move to another city? Is it worthy to do so? Then you need do a decision tree analysis!





If you move to another city, you need to quit your old job and find a new one, probably you can’t find a new job immediately, there may be a period that you have no income. Let’s assume you need a year to find a new job. Then the costs of moving will be the benefits of your original annual income. For your relationship, you know if you move to your partner’s city, there will be high chance of probability that both you will get married. If you don’t move, there will only be low chance of probability that you will get married. If you get married, your tax level will be lower, you share the rent and perhaps your annual income will be higher, w…

Get to know me in three minutes

Thanks to my dearest and nicest colleague Andreas Kelling to make this professional video for me. I like it so much! Thanks million times :) )) Meanwhile, an article described our project is published on BAM's home webpage. You can read through Research trainees on the trail of concrete fatigue . Thanks a lot to my lovely colleague Rebekka Gabler for the interview and the article:D
Hope all you have fun watching the video as well as reading the article!





My big BAM theory

It has been almost three months since I haven't updated my blog. To be honest, I really had a tough time since last December, not only because of pressure from my work, but also from my private life. I was down for quite a while, but  don't worry, I have recovered and I am totally new LIJIA! When I look back to those hardest time, it is not the tears and sleepless night, all I remembered is how my colleagues and friends get me through all of this. We are not alone in the society, we can't live without friends and family. I feel so lucky that I met such a nice group of people in BAM that light up my way through the dark . In this post, I want to talk my life working as a PhD in BAM. (One nice afternoon, when I went off  from work and captured the beautiful sunset outside of BAM)
BAM stands for Bundesanstalt für Materialforschung und –prüfung, which means Federal Institute for Materials Research and Testing. It is a senior scientific and technical Federal institute with res…

Summary of my first year PhD life

It has been one year already since I started my PhD, time flies! I still remembered  the first day when  I moved to Berlin. It is just like yesterday, OMG.


12/2016 I started to work in Federal institute of material research and testing (BAM), Berlin, Germany. My supervisor gave me the first task.
1/2017 I wrote my state of art for my PhD topic under the framework of INFRASTAR project.
2/2017 I submitted an abstract for IWSHM2017 based on the task  given by my supervisor.
3/2017 INFRASTAR first training week was held in Berlin, it was the first time to meet 12 ESRs.  INFRASTAR first training week in Berlin, BAM
4/2017 I moved to Aalborg and started my secondment in Aalborg university and worked on my paper.
Secondment in Aalborg University

5/2017  With the help of teams of John in Aalborg university, I wrote the full manuscript here for IWSHM2017.

6/2017 I was back to Berlin and attended outreach activity PhD retreat in warren which was organized by BAM PhD organization. And I submitt…

Brainstorming of team values during INFRASTAR Training week #02

Last week, our INFRASTAR project team had our second training week in EPFL Lausanne, Switzerland. We had 5 days of intensive courses and met plenty of excellent lecturers and professors. One of the lecture impressed me a lot and in this post I want to share how we achieve the team building with help of Mr. Polo Looser.

Here is the beautified results of our brainstorming towards team building :)



At the beginning, Mr. Polo Looser wrote three keywords on the black board: Values, Dealing with interaction and Ways of working, which are related to team working. We were divided into three groups and each group would discuss how we understood the keywords and wrote our opinion on the blackboard. 

Then  Mr. Polo Looser told us to rank these comments. Everyone can only vote three comments following 3,2,1 points on each key word group.

Finally we got the ranking list of what most people think of the team work!
Top three keywords about our project values: Creativity and curiosity. Pleasure. Tr…